After finishing their internships, Shouta Aizawa, the homeroom teacher, puts Class 1-A students through more rigorous training. They participate in a survival game where they pair up with four students from Isamu Academy High School. To win, they have to either eliminate their opponents or find a hiding spot that conceals them until the end of the game. Tsuyu Asui meets with a previous friend from middle school, Habuko Mongoose, in the exercise. However, not every Isamu student is friendly, as seen through Katsuki Bakugou's immediate hostility towards Romero Fujimi. Their confrontation causes Romero to use his Quirk, which turns anyone it comes into contact with into a zombie. How will the remaining students manage the epidemic-like outbreak?