As the battle at USJ winds down, Izuku and All Might think about its repercussions. Meanwhile, the villains slink home to plan their next move.

Four weeks after the League of Villains' attempt to assassinate All Might, the students of Class 1-A return to USJ to complete their disaster training. However, unbeknownst to the heroes-in-training, an unexpected foe is lurking within the facility's walls and waiting to strike...