Once night falls, Larry discovers that the exhibits come to life, including a playful Tyrannosaurus skeleton nicknamed "Rexy" who behaves like a dog; a mischievous stuffed capuchin monkey named Dexter, along with various other African animals; rival miniature civilizations portraying the Old West, Ancient Rome, and Ancient Maya; an Easter Island Moai obsessed with chewing gum; and wax models of various historical figures, including the violent Attila the Hun who desires to tear the limbs off his victims; four pyromaniacal Neanderthals; Sacagawea, who is locked in a glass case unlike the other exhibits; and Teddy Roosevelt, who rescues Larry from the miniature leaders Jedediah and Octavius, from the Old West and Roman dioramas respectively. Teddy explains that since an ancient Egyptian artifact — the Golden Tablet of Pharaoh Ahkmenrah — came to the museum in 1952, all of the exhibits come to life each night. If the exhibits are outside the museum when the sun rises, they turn to dust. Teddy helps Larry by restoring order, but only for one night. In the process, Larry finds out that Teddy has a crush on Sacagawea, but without the confidence to go talk to her through her glass display.