Kamino Incident

The Kamino Incident is an event that takes place during the Hideout Raid Arc.

Prologue
Following the abduction of Katsuki Bakugo, Naomasa Tsukauchi calls All Might and reveals they've discovered the location of the League of Villain's hideout. They found out the villain's hide in a bar after matching Dabi's description to a man who walked into the foreclosed bar. Naomasa discloses that the Police plan to team up with Pro Heroes to raid the hideout and save Katsuki.

Momo meets with All Might and Detective Tsukauchi at the hospital. She reveals that she and Yosetsu Awase placed a tracking device on one of the villains and gives All Might the receiver for it. Shoto and Eijiro overhear their conversation and try to recruit Izuku to help rescue Katsuki themselves.

Shoto and Eijiro request a new receiver from Momo. Both she and Izuku meet them behind the hospital after dark, where Tenya confronts them. Tenya hits Izuku and expresses his concern for the safety of his classmates, as well as his misgivings with how their actions could further tarnish U.A.'s reputation. Shoto and Eijiro explain they plan to save Katsuki covertly. Tenya and Momo both decide to join the mission despite not completely agreeing with their classmates.

The Police recruit Endeavor, Best Jeanist, Edgeshot, Tiger, Gran Torino, Mt. Lady, and Kamui Woods to the Hideout Raid Team. Each of the heroes gets the call to arms and they meet with Noamasa for a strategy meeting.

Momo and Tenya accompany Izuku, Shoto, and Eijiro on the bullet train to Kamino so they can keep them out of trouble. They know their classmates may not approve but they move out anyway. Once there, they buy disguises and make for the location of the Nomu.

The Hideout Raid Team assembles and Naomasa explains the U.A. press conference on television is a distraction to the villains. Gran Torino tells All Might there might be a chance that All For One may make an appearance. A team led by All Might goes to the main hideout while the team lead by Best Jeanist goes to their second hideout.

Incident
The U.A. students make their way to the hideout and discover its a factory for breeding and storing the artificial humans known as Nomu. Meanwhile, the Hideout Raid Team begins their assault against the League of Villains. All Might breaks in the main hideout with a smash attack after the Police distract the villains with a fake pizza delivery. Gran Torino and Kamui Woods backup All Might and restrain all the villains at once.

Tomura Shigaraki and Kurogiri try to call on the Nomu, but none are transported from the factory. Mt. Lady breaks in the Nomu factory and Best Jeanist leads the team inside. He uses his Quirk to restrain all the Nomu and the heroes successfully take control of the hideout. Izuku and the others notice the heroes assault and decide to retreat since they have the situation under control.

At the main Hideout, All Might ensures Katsuki's safety and tries to interrogate Tomura for All For One's location. The villain ultimately refuses and then several Nomu suddenly appear from portals made of black liquid. Theys invade the main hideout and attack the Police stationed outside as well. Katsuki is warped away before All Might can grab him.

All Might and Gran Torino recognize this as All For One's doing. Naomasa tries to contact Best Jeanist but gets no answer. Just a few minutes before, All For One attacked the Hideout Raid Team at the Nomu Factory. Best Jeanist manages to save his team from death, but All For One manages to effortlessly defeat the heroes.

All For One transports Katsuki and all the villains to him using his Warping Quirk. All Might leaves the main hideout to Endeavor and heads for the Nomu factory. The students are stricken with fear and hide behind a wall as they listen to All For One reassure Tomura Shigaraki that his plan will eventually succeed. Izuku wants to try and save Katsuki, but Tenya and Momo stop the boys from acting. All Might arrives on the scene and confronts his arch nemesis.

Battles

 * Hideout Raid Team vs. League of Villains
 * Hideout Raid Team vs. All For One
 * All Might vs. All For One
 * Katsuki Bakugo vs. League of Villains