Warning: Spoilers for My Hero Academia: You're Next ahead!My Hero Academia: You're Next chronicles the battle against a mysterious All Might impersonator who seems to wield power on the level of All Might's, but is set on taking over Japan as its new "Symbol." This man, who dubs himself Dark Might after a call with the real All Might, must be stopped before Japan is ruined any worse than it already is.

Dark Might appears and unleashes his Quirk, Alchemy, which has been supercharged by the Quirk of another woman he's holding captive, Anna Scervino. The enhanced version of Alchemy is able to take most of a city and transform it into a floating fortress, which Dark Might uses to launch an attack on UA, where All Might is. Swept up in this transforming fortress are the students of Class 1-a, and as the only ones inside the fortress,...