Encounter with the Unknown

Villains fill the U.S.J. plaza behind three leaders, one of whom notes All Might's absence and checks it against a schedule stolen the day before. Eraser Head identifies them as the intruders who breached U.A. earlier, while Tomura Shigaraki, deflated by the no-show, wonders aloud whether murdering students would draw the Symbol of Peace out.

Eraser Head orders Thirteen to evacuate the class and call the school, brushes off Izuku's concern, and leaps in. A firing squad lines him up, and he erases every Quirk in it before dropping the shooters with his capture weapon. The villains recognize him and name his power, and a mutant-type steps forward knowing Erasure cannot touch him, only to be held off at range with the Capturing Weapon.

Izuku realizes he had badly underestimated his teacher. Tenya snaps him out of it as the class follows Thirteen toward the exit, but Kurogiri cuts them off, introduces himself as League of Villains, and states plainly that they came to kill All Might. Eijiro Kirishima and Katsuki rush him to no effect, and before Thirteen can fire he warps the class out across the simulation zones.

Izuku surfaces underwater in the Shipwreck Zone, where a shark-like villain lunges for him and takes a kick from Tsuyu instead. She flings Izuku onto the ship with her tongue and follows with Minoru Mineta in tow. The three talk over the villains' plan, and Izuku insists that protecting All Might is their job as heroes. Shoto, Katsuki, Eijiro, and other classmates fight back in their own zones.

At U.A.'s nurse's office All Might cannot reach Thirteen or Shota and wants to leave in hero form, but Principal Nezu holds him in place with a lecture about being a responsible teacher instead of exhausting himself on hero work.

Thirteen tells Tenya he has to run to the school, since no call escapes the U.S.J. He balks at abandoning his classmates until they push him, reminding him that using his Quirk to save people is the whole point of rescue training. Kurogiri overhears the plan and moves to intervene, and the Space Hero drags him into a Black Hole.

The villains ring the ship but refuse to board. Minoru panics; Izuku works out that they know nothing about the students' Quirks and are being cautious, and builds a plan around what his classmates can do. A water-manipulating villain shatters the hull, and as it sinks Izuku jumps and fires Delaware Smash into the surface, spreading the water and snapping it back into a vortex that traps the villains among Minoru's sticky spheres. Tsuyu hauls both boys clear of the zone with her tongue.

The U.S.J. Incident begins in earnest. Eraser Head engages the villain crowd alone. Kurogiri names the League of Villains, states their goal of killing All Might, and scatters Class 1-A into the simulation zones. Thirteen sends Tenya Ida for help and draws Kurogiri into a Black Hole. Izuku, Tsuyu, and Minoru clear the Shipwreck Zone with Delaware Smash and Pop Off. Nezu keeps All Might from responding.

Adapted from the last two pages of Chapter 13 plus Chapters 14 and 15, the episode aired 5 June 2016 in Japan and 14 July 2018 in the United States, using THE DAY and HEROES.

Several beats shift. Kurogiri intercepts the group mid-evacuation-plan in the manga, while the anime lets them reach the door first. Izuku recognizes his zone as he falls on the page; on screen the zone's name appears only after Tsuyu rescues him. Bye-Bites is beside him the moment he lands in print, whereas the anime has him start swimming up before the attack comes. Brief cuts to Mashirao in the Fire Zone and Fumikage and Koji in the Squall Zone are added, setting up fights in the next episode, and Hanta goes without his helmet.

The explanations are re-illustrated too. Tsuyu's Quirk rundown swaps a silhouetted frog for footage of her actual abilities until she reaches the part about her stomach, and Izuku's power gets a flashback to his first use of One For All aimed at the Zero Point Villain Bot in place of the flag bearing All Might's face. Dozaemon's water claw is also drawn forming and dissolving in full as it cuts the boat apart.