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...

Recap of My Hero Academia's first season, aired a week before the second season.

Story about a joint practice session between Izuku's class and Isami High students at U. A. Academy, takes place after the field training arc in the second season.

In preparation for the provisional license exam, UA's 10th grade students are participating in a simulated rescue, but the rescue has gone wrong and the students are now trapped in an underground shopping mall. As if the situation wasn't complicated enough, water starts seeping through the walls. The students have to get out of here as soon as possible. That said, Bakugo still takes the mission very seriously and refuses to go out without finding and evacuating the rescue dummy. The water is rising dangerously. Will they be able to evacuate and avoid the disaster?

The "Hero League Baseball" is an organization set-up by several Pro Heroes to allow them the chance to play and compete in their spare time. For this year, the "Orcas", led by Gang Orca, and the "Lionels", led by Shishido, have made it to the finals. Present Mic narrates the game, accompanied by an extremely apathetic Eraser Head.

It's been ten months since Izuku en-rolled at U.A. High School, and on top of his regular school work, four days a week he has been continuing his Hero Work-Study at the Endeavor Agency. On one day, they are approached by a police officer, seeking assistance in tracking down a local graffiti artist vandalizing the streets.

時值寒假。因為被禁止離開宿舍，1年A班的學生閒到發慌，此時3年級的通形未吏生突然造訪，還帶著後勤科製作的卡牌遊戲「雄英 HEROES BATTLE」！A班的學生們便迫不及待地玩起來了，但這個用雄英學生卡牌來進行戰鬥的遊戲，卻沒辦法用雄英風格來應對……！究竟誰會贏得這場卡牌遊戲呢…！？

After the Quirkless Izuku Midoriya meets All Might, he becomes the successor to All Might's Quirk, One For All, which means he must eventually go up against All For One and Tomura Shigaraki.

All Might's last fight against All For One set off a series of events leading to his retirement as a hero, but he continues to fight, even as the embers of One For All within him die out.

Ochaco and the Todoroki family think back about why they are fighting and reconfirm their convictions as they continue to face off against the villains.

When Tomura Shigaraki was a child, a tragic accident led to the death of his family, which continues to fuel his desire to destroy.