Derek rushes an injured Braeden to the hospital. A virus designed to kill werewolves is released during the PSATs, and the school is quarantined. Deaton is confronted by Satomi at the animal clinic; she explains that most of her pack have been wiped out by the virus, and she was the only one who was immune. After conducting an autopsy on a werewolf, Deaton figures out that the virus is a version of canine distemper . With help from Satomi and Derek, they realize that Reishi tea leaves are the cure, and that there is a jar of them in the Hale vault. Scott, Malia and Kira are dying due to the virus, and hide in the vault to avoid the assassin. Stiles discovers that an assassin, a teacher overseeing the PSATs, is responsible for unleashing the virus. Agent McCall saves Stiles by shooting the teacher, who was about to kill Stiles. Using the last of his strength, Scott finds the tea leaves and breaks the jar, releasing the spores, which cures the virus. Malia walks away from the others after discovering that she is Peter's daughter.
[PREVIOUSLY_ON] Derek: I know a little about this pack. Their Alpha is a woman named Satomi. They have a kind of secret meeting place in the woods. (GROANING) Deputy Parrish: Meredith's gone. They found her an hour ago in her room. Kira: Peter and Malia? Lydia: Father and daughter. Stiles: We should probably count it. (SNARLING) (SIGHS) (SNARLING CONTINUES) MAN ON TAPE: After entering the IP address, you will be connected through a Darknet portal to an untraceable bank. Once logged in, enter your account number to receive wire transfers. The IP address will deactivate with each transfer. You will be assigned a new IP address if you choose to continue down the list. Remember, visual confirmation is always required for payment. Stiles: You ever made a wire transfer? Scott: Never had enough money. Stiles: So you didn't understand a word of that either? Scott: I don't understand any of this. Why would someone use all this money just to kill us? Stiles: Someone wants you dead, dude. Badly. Whoa, whoa, what are you doing? Scott: It's late. We've got the PSATs in the morning. Stiles: No, I meant the money. $500,000. You know how much money that is? Scott: It's 500,000... Stiles: It's half a million dollars. Scott. What are you going to do, just slide it under your mattress? Scott: I have to talk to Derek. The money's his. Stiles: You mean his and Peter's. Scott: What does that mean? Stiles: It means maybe we should proceed with caution. Scott: You don't think we should tell Derek? Stiles: No. No. (SIGHS) No, of course we have to tell him. I'm just... I'm just saying, some of that money's Peter's, right? Scott: Yeah. Stiles: Right? Peter. Homicidal killer? Remember? You want to give $500,000 to him. Scott: So we should give Derek his money back. But not Peter? Stiles: I didn't say that. Scott: Stiles, what are you saying? (BANGING) Malia: We found Satomi's pack. Derek and I. But they're dead. Scott: All of them? Malia: All the ones we found. Stiles: Then where's Derek? Derek: She's been shot! I think she's dying. Deaton: You could have called, Satomi- san. (INDISTINCT CHATTERING) KIra: Where's Lydia? Stiles: She's took it her freshman year. Malia: Does that mean I could have taken it some other time? Scott: Malia, you studied harder for this than any of us. Malia: Doesn't mean I'm gonna do good. Stiles: Well... Malia: Well, what? Stiles: It's do well, not good. Malia: Oh, God! Okay, okay. Scott: You're doing this, because while we're trying not to die, we still need to live. If I survive high school, I'd like to go to college. A good college. Kira: It's only three hours. We can survive three hours. (MUSIC PLAYING) Ms Martin: Cell phone in the envelope, Scott. You'll get it back after the test. Simon: Please do not open the test booklet until you are instructed to do so. This test is two hours and 10 minutes. There will be two 25-minute critical reading sections, two 25-minute math sections and an essay writing portion that will last 30 minutes. There are supposed to be two teachers monitoring this exam. Ms Martin: I know. It's Coach. He's not exactly punctual. Um, let me just try him again. (CELL PHONE BEEPING) Ms Martin: Oh, no. (WHISPERING) Hey, get up. (GROANING) Hey. Oh, Bobby. 15 years sober and you fall off the wagon at school? Coach, look at me. It's Natalie. Coach: (MUTTERING) Ms Martin: Forget it. I'll bring you some coffee during one of the breaks. 15 years, Bobby. I can't find him, but Mr. Yukimura is upstairs grading papers. Do you want me to try him? Simon: We have to start. We can ask for his assistance during the first break. You may now open your test booklets and begin. (MUSIC PLAYING) Ms Martin: Sydney! Are you all right? Sydney: I'm okay. I just got kind of dizzy. Ms Martin: Sydney, how long have you had this? Sydney: I don't know. Ms. Martin, do I need to stop the test? Ms Martin: No, um, it's fine. Everybody stay in your seats. I'll, um, be back in a minute. Nobody leaves the room. (DOOR OPENS) (GASPS) (CELL PHONE BEEPING) Ms Martin: Get back! No! Do not come in here! Get back outside! Back to your seats. Now. Please. I need the number of the CDC. Yes, the Center for Disease Control. Sheriff: Excuse me. Can anyone tell me what we're dealing with here? C.D.C.: Hopefully a false alarm. The details provided have concerned us and your local health authorities enough to order a quarantine. We're going to need your help ensuring that no one gets in or out of the school. Sheriff: My son is in there. C.D.C.: Is this gonna be a conflict for you? Sheriff: Conflict? No. Stressful? Yeah. All right. What happens now? Ms Martin: We isolate the sick and then we wait for instructions. If I'm wrong, they'll be out of here pretty quickly, and then I'm the crazy biology teacher who panicked for nothing. (EXHALES LOUDLY) Scott: Hey. You're gonna be okay. Sydney: It's not that. The PSATs, the qualifying tests for the National Merit Scholarship. My parents can't afford to send me to college without it. Scott: Well, I'm sure they'll let you take it again. Stiles: Bet they're thinking smallpox. Simon: Not likely. Smallpox was eradicated worldwide in 1979. We've only managed to completely eradicate two viruses in history. The other was rinderpest. It killed cows. Stiles: So we should be comforted by that, right? Simon: Unless it's something worse. (CHATTER OVER RADIO) Malia: Whatever it is, they're taking it pretty seriously. They're a lot of cars and trucks out there. Sheriff: We're doing the best we can. Malia: Your dad's with them. Stiles: Hey, I should probably call him. Simon: Don't bother. They would have shut off any access to all outside communication by now. No cell service, no WiFi. No one starting a panic. Looks like we're all just going to have to wait here and see what happens. Deaton: How does it begin? Satomi: With fever. Then shifting becomes uncontrollable. Fangs, claws, even full, unwarranted transformations. We moved into the woods when that began. Then it progressed faster and faster. They couldn't stand. But worse than that was this sudden blindness. Deaton: Total? Satomi: They couldn't see a thing. From there, they had only a few minutes left. Deaton: I'm going to be honest, Satomi. We need to get him to a hospital. Satomi: That's never really been an option for our kind. Unless you know something I don't. Deaton: Not something, but someone. (ELEVATOR DINGS) (SOBBING) (DOOR OPENS) Derek: What's that? Melissa: Naloxone. We need to wake her up. Derek: I thought you said she needed to rest. Melissa: That was before I found out the CDC just put the high school under quarantine with Scott and Stiles still in there. (GASPS) (GROANS) Melissa: Braeden, look at me. You were shot, but you're in the hospital now and you're fine. Do you understand? Good. Okay. Last night you were in the woods and you came across another pack? Do you know what happened to them? Derek: I told you, they were poisoned. Braeden: No. No, they were infected. It was a virus designed to kill werewolves. It did. It killed them all. Ms Martin: Scott? You've been in there a long time, you all right? Hey, you need to come back with the others. (KNOCKING CONTINUES) Lydia: All right, Meredith. I'm not sure how to do this. I'm not a psychic. And apparently I'm not much of a banshee either. But I'm trying to help my friends. I don't know if you can hear me. Or, uh, what I'm supposed to ask you. But if I have this thing, it's got to work some of the time. It's gotta help someone. Maybe what I really wanted to say was... I'm sorry. I wish I could have helped you. I'm sorry. (GROANING) Scott: Get Stiles. (INDISTINCT CHATTERING) Malia: Kira, do you ever get the feeling that Scott and Stiles aren't telling you everything? Kira: What do you mean? Malia: Like they hide stuff. Kira: I think if they did, they'd probably have a pretty good reason. Malia: Do you know what they're hiding in the bag under Scott's bed? Kira: What? No, I've never been under Scott's bed. Or in it. Just on it... Wearing clothes. C.D.C. Doctor: Kira Yukimura. You feeling all right, Kira? I don't like needles either. I promise, it'll be fast. (ELECTRICITY CRACKLES) Malia: Kira. Kira! C.D.C.: Excuse me. Careful, Doctor. Slowly... Sheriff: What happened in there? - C.D.C. Doctor: I don't know, must have been static electricity. C.D.C. Employ: Any breach of the interior layer, doctor? C.D.C. Doctor: It's okay, it just broke the top layer. Agent McCall: Any verdict on what we're dealing with yet? - My son's in there. C.D.C. Doctor: Your son and his son. Great. You can debrief each other. Agent McCall: I heard smallpox. Any truth to that? Sheriff: You want my opinion? I don't think the Orphans were the only professional killers in Beacon Hills. Mr Yukimura: It's still happening. Malia: I can't make them go back. Mr Yukimura/b]: Obviously the virus is affecting the two of you in a way it won't hit any human being. [b]Stiles: You guys have to stay out of sight. We have to quarantine you from the quarantine. Kira: Yeah, but where? I mean, what if they get violent? Like on a full moon. Scott: We shouldn't stay in here. Not in the locker room. Malia: A classroom is not going to hold us. Kira: What about the basement? Scott: Too many ways out. We need something secure. Somewhere nobody can find us. Stiles: The vault. Scott: The Hale vault. The Hales always have an escape route. Like their house. There has to be another way in. Stiles: This is where the school sign is, so the vault's got to be right about here. Mr Yukimura/b]: I suppose if there's a second entrance, it would probably be accessible from the basement. [b]Stiles: It's probably somewhere in this hallway. West corridor. Whoa. MR. YUKIMURA: It's happening to you too. You're getting sick. You all are. Kira: I don't feel sick. Mr Yukimura: I think it's affecting you differently, neurologically. I found your test answers here in a pile with the others. [SCENE_BREAK] Stiles: Hey, guys... Over here. Look at the cracks in the wall. It's like the entrance outside, it only opens with claws. Anyone's claws, right? Scott: Um... Malia, can you try? Malia: Why me? Scott: I don't have control. Malia: Okay. I'll do it. But first tell me what you've been hiding from me. (STAMMERS) Malia: I know you think you're trying to protect me, but I can handle it. I know I'm on the list. Stiles: Yes... Malia: So how much? Stiles: How much what? Malia: How much am I worth? Scott: Four million. Stiles: Are you okay? Kira: Yeah. Scott's worth 25, Kira, six. They'll take you guys out way before me. Stiles: (WHISPERING) That's progress. That's progress. (STONE SCRAPING) Melissa/b]: Okay. This isn't happening at the school, is it? [b]Deaton: School? It's Saturday. Melissa: They're taking the PSATs. Satomi: I think we need to hurry. (ELEVATOR DINGS) (CHOKING) (SOBBING) Stiles: You know, this is where it all started. That's where the money was. 117 million in bearer bonds. [bKira[/b]: How do you even change bearer bonds into cash? Stiles: Bank, I guess. They just let it sit here the whole time collecting dust. You know bearer bonds are basically extinct? Kira: Why does it matter? Stiles: You know how many problems that money could solve? Kira: For you? Stiles: Me. My dad... The Eichen House and MRI bills are crushing him. Scott: Mom does this thing, she writes down all the items in our budget, and how much they cost, then she adds them all up and figures out how long we have until... We lose the house. Lydia: Sheriff! Sheriff! Sheriff: Whoa, hey! I know this girl, let her in. Lydia: (EXHALES) My mom's in there. What's happening? Sheriff: We're working on it. Stiles: Anything? Scott: They're looking for us. Someone's going to have to go out there. (WHISPERING) We need to tell her the truth about Peter. She's going to see the rest of the dead pool eventually. Stiles: Try to remember that Peter is the one name missing on that list. Which either makes him incredibly lucky with a benefactor, she finds out about him she's going to go to him, you know she is. And then he's going to twist his way into her head like he does with everyone. Including us. We let him walk around like nothing ever happened, like he's one of the good guys... Scott, he's not one of the good guys. If she finds out about him, she's gone. That's probably what he's waiting for and if he wins, we lose. Scott: We're already losing. (SAW WHIRRING) (FLESH SQUISHING) Deaton: I think I know what this is. Unfortunately, if I'm right, and Scott and the rest are infected, it's not good. They're going to die without an antidote. Stiles: Malia... Malia. Malia/b]: Mmm. [b]Stiles: I gotta leave for a few, okay? Malia: Where are you going? Stiles: Whatever's happening, it's worse for you guys. That means it's not just people getting sick, it's another assassin. (SIGHS) (BREATHING HEAVILY) Stiles: Here. (SNIFFLING) Malia: You're coming back, right? Stiles: Yeah. Yeah, I'd never leave you behind. (STONE SCRAPING) (BRAEDEN CLEARS THROAT) Braeden: What are you still doing here? Derek: I'm protecting my investment. Got a lot of money riding on you. (KNOCKING ON DOOR) Melissa: Derek. I think there's someone here you've been trying to find. Sheriff: Lydia... As all this is still very new to me, and I don't know how it works, I still have to ask. Do you have any kind of... Indication? Any kind of feeling about this? Is someone in there going to die? Lydia: Yes. And it's not just a feeling. Deaton: It's a variant of canine distemper. A few years ago, an outbreak in Yellowstone killed 40% of the wolf population. Melissa: What's it going to do to our wolf population? Deaton: Well, it's been altered to infect quite a bit faster. Derek: You mean it's been weaponized? Satomi: It infected my whole pack. Deaton: Everyone except for you. That's the real question. Did you not get infected? Or are you immune? Ms Martin: Stiles, you're not looking so good, maybe you ought to lie down. Stiles: It's okay, have you seen Mr. Yukimura? Ms Martin: Yeah, he's fine, he's helping the other students. Stiles: Okay. Is Coach the only adult who got sick today? Ms Martin: As far as I know. Stiles: Why is he... Ms Martin: Stiles? I think you should lie down. Stiles: Yeah, no, it's okay. I'll be back, I'll be right back. Deaton: If your pack was infected, then who was doing all the shooting at the entrance to the woods? Satomi: Apparently another assassin. Personally, I'd rather face a gun than a variant of smallpox. Melissa: Sounds like you're going to get plenty of chances. Satomi: Sorry. I just noticed how much you remind me of Talia. I used to visit her a lot, you know. Do you remember me? Derek: I remember the tea. You always brought that tea that smelled terrible. Satomi: I brought that tea as a gift. Your mother loved it. Deaton: What kind of tea? Satomi: What? Deaton: The tea with the smell, what kind was it? Satomi: Reishi. Wild purple reishi. It's very rare. Deaton: It's also a very powerful emedy for sickness. Satomi, you didn't get infected because you've been inoculated. Melissa: Okay, okay. How rare is it? Can we find it? Derek: We don't have to. My mother kept some of it. It's in our vault. (PANTING) Scott: Malia... Malia? (PANTING) Malia: I can't see. I can't see anything. (PANTING) Simon: I was wondering how that idiot got sick. I'm also wondering where your friends are. Since in order to get paid by the benefactor, I need to have proof they're dead. Stiles: Visual confirmation. Simon: Exactly. Coach: (PANTING) What the hell is going on? Ms Martin: The lesions are gone. Sydney: Can I take the test again now? (CHUCKLES) Ms Martin: They're getting better. They're all getting better. (INDISTINCT CHATTER) (DOOR OPENS) Malia: What's happening to us? Kira: Scott? I can't... I can't see... Simon: Still a bit feverish, Mr. Stilinski. But you should know something, the virus doesn't kill humans, you'll get better. So don't you think you should tell me where they are? Shouldn't one of you get to live? Stiles: I think I saw them in the library. Or it might've been the cafeteria. It was definitely one of those two. Simon: I'm going to count to three, and then I'm going to kill you. Stiles: Think you can scare me? Simon: No, I think I can kill you. I just thought the countdown would make it more exciting. So... One... Two... (GUNSHOT) (SPITTING) (PANTING) Stiles: Where the hell did you come from? Agent McCall: Stiles, listen. I got a call from Melissa. I don't know what it means. She said there's an antidote. It's in a vault, reishi mushrooms. Stiles: Wait, what in a vault? Agent McCall: It's in a jar on one of the shelves. She said to tell Scott, it's in the vault. Derek: I have to get to the school. Satomi: What about the others at Lookout Point? (ELEVATOR DINGS) Satomi: I may have learned to control my anger, but I still know when to use it. Stiled: Hey, Scott? Scotty? In the vault, in there with you. It's called reishi mushrooms. Scott? Scott, open the door! It's in there with you. It's in a jar, it's on one of the shelves. Scott! Scott, can you hear me? (SCREAMS) Kira: Reishi... Scott, I saw it. In a jar on one of the shelves. (WHISPERING) Reishi... (PANTING) (INHALES DEEPLY) (GASPS) (PANTING) Sheriff: Excuse us, excuse us. Pardon me. Lydia: Mom. Mom! Ms Martin: Lydia! I'm sorry, I'm so sorry. I was just... trying to get a little overtime. (MUSIC PLAYING) Stiles: Hey, Malia?
Weaponized