After completing their internships, Class 1-A students face a new challenge under their homeroom teacher, Shouta Aizawa. They engage in a survival game alongside students from Isamu Academy High School, where alliances are tested and old friendships rekindled. Tsuyu Asui reunites with her middle school friend, Habuko Mongoose, amidst the intense training. However, tensions rise as Katsuki Bakugou clashes with Romero Fujimi from Isamu, triggering a chaotic turn of events. When Romero unleashes his Quirk, transforming individuals into zombies, the remaining students must navigate this perilous situation to survive.