A factory explosion plunges a small town into a timeless freeze, leaving 14-year-old Masamune and his pals to grapple with a quickly collapsing reality.

In an abandoned Tokyo overrun by bubbles and gravitational abnormalities, one gifted young man has a fateful meeting with a mysterious girl.

While putting their hero skills to use on the peaceful island of Nabu, the Class 1-A kids face a sudden attack from a formidable villain known as Nine.

Ikoma and the Iron Fortress take their fight to the battlegrounds of Unato, joining the alliance to reclaim the region from the kabane horde.

All Might and Deku accept an invitation to go abroad to a floating and mobile manmade city, called 'I Island', where they research quirks as well as hero supplemental items at the special 'I Expo' convention that is currently being held on the island. During that time, suddenly, despite an iron wall of security surrounding the island, the system is breached by a villain, and the only ones able to stop him are the students of Class 1-A.

Inside a vast, self-replicating city bent on eliminating all life, mysterious loner Killy emerges to guide a remnant of humanity desperate to survive.