Paifu's mother later tells him that school has been canceled for a while due to the serious flu. He celebrates by going to José's home and runs into the village doctor. The doctor realizes that the flu strain is the , a disease that affects only monsters and kills the victim in a month's time. When the two arrive at the Rodriguez residence to see José's ill father, the doctor's suspicions are confirmed to everyone there and reveals that the cure to the Monster Flu can be created by a witch that resides at the top of Horned-Owl Mountain. The doctor also tells of a forest that one must cross and that a terrible monster dwells along the forest path which leads to the mountain. Due to the adult monsters being sick, Paifu and José volunteer to make the trip and are accompanied by the former sumo wrestler Maruyama, who in actuality, was deceived by Paifu who claimed that the villagers would pay him 1,000,000 yen for his troubles. As the trio are about to leave, Arpon joins the team, exclaiming that he wants to be a hero for the villagers.