My Hero Academia: World Heroes' Mission

A doomsday cult known as Humarise believes that Quirks will eventually become so powerful that they will bring about the extinction of humanity. Because of this, they have planted bombs all over the world filled with "Trigger" gas which kills Quirk users by driving their Quirks out of control and dying in the process. Their leader, Flect Turn, plans to use these bombs to save humanity by killing the Quirk population. After Humarise detonates its first Trigger Bomb, the World Heroes Association dispatches Pro Heroes and U.A. High Hero Course students to Humarise's targets in hopes of disarming the remaining bombs. Izuku Midoriya, Katsuki Bakugo, and Shoto Todoroki are among those sent to Humarise's supposed main headquarters in the country of Otheon. None of the Heroes find any trace of Humarise and they are put on standby.

During an outing, Midoriya, Bakugo and Todoroki encounter a jewel robbery in progress. Todoroki and Bakugo pursue the thieves while Midoriya gives chase to their courier, Rody Soul, a street urchin who took the job to provide for his younger siblings. Meanwhile, Allan Kay, a Humarise scientist, flees with an important briefcase but is attacked by a Humarise agent, Beros, and he crashes his car in the midst of Midoriya and Rody's chase. Rody accidentally grabs Kay's briefcase shortly before Midoriya catches him. They are soon attacked by the police, but Midoriya escapes with Rody using Blackwhip.

Midoriya is publicly accused of mass murder by Otheon's chief of police, who is a member of Humarise, and goes off the grid per Todoroki's advice. Midoriya and Rody make their way to the neighboring country of Klayd, where the Otheon police won't have jurisdiction. Midoriya sends a coded message about his new destination to Todoroki, who heads off with Bakugo to join him there. That night, Rody becomes homesick and secretly reports the briefcase to the police. The officers that arrive turn out to be Humarise agents, who attack him. Midoriya, having been woken up by Rody's bird companion, Pino, saves him, but is wounded by Beros during the fight. Rody apologizes to Midoriya while patching him up, explaining that his father abandoned the family to join Humarise, and that he and his siblings were ostracized as a result.

The two are attacked at the Klayd border by Beros, but are saved by Bakugo and Todoroki, while Beros commits suicide in order to evade capture. In the aftermath, Midoriya discovers a hidden compartment in the briefcase containing a puzzle which Rody played with as a kid. Rody solves it and finds a USB device and a data disk inside. The disk contains a message from Kay, who reveals that he and Eddy Soul, Rody's father, were forced by Humarise to create the Trigger bombs. The device contains a kill code for the bombs created by Kay and Eddy. Humarise announces that they will detonate their remaining bombs in two hours, forcing the deployed Heroes to work through the ensuing global panic to find them.

Midoriya and the others head to Humarise's headquarters with the device on a plane piloted by Rody. Bakugo and Todoroki deal with high-ranking Humarise goons, while Midoriya faces Flect Turn, whose Quirk reflects whatever comes into contact with him. Midoriya is overwhelmed by Flect Turn's natural defenses, as well as his laser barrage. Rody arrives and seemingly betrays Midoriya by handing over the device in exchange for his siblings' safety. However, thanks to Pino, who is actually Rody's sentient Quirk which expresses his true feelings and intentions, Midoriya realizes it's a feint and catches Flect Turn off guard. Realizing that Flect Turn's Quirk has a limit to how much damage it can take, Midoriya uses One for All 100%, to defeat Flect Turn with a barrage of punches. Meanwhile, Rody heads for the Trigger Bombs' control system, and despite being wounded by the laser defense system, he and Pino barely manage to insert the device in time.

In the aftermath, Humarise's surviving members are arrested, while the Heroes are healed at the hospital. As Midoriya heads back to Japan, he and Rody bid a tearful goodbye to each other. Class 1-A reunites back at U.A., while Rody gets a job as a bartender and pursues his dream of becoming a pilot.

In November 2020, each of the official Twitter accounts for My Hero Academia manga, anime series, and films posted tweets that could be combined to form the sentence "He will meet the three musketeers". Each tweet had links that would lead to images of Katsuki Bakugo, Izuku Midoriya, and Shoto Todoroki which could be combined to form a teaser visual for the third film of the franchise.[6] In March 2021, the title of the film was revealed as My Hero Academia the Movie: World Heroes' Mission, which would be based on an original story, with manga creator Kōhei Horikoshi serving as its chief supervisor and the original character designer. Additionally, Kenji Nagasaki was also revealed to be directing the film at Bones along with Yousuke Kuroda as the screenwriter and Yoshihiko Umakoshi as the character designer.[7]

Ryo Yoshizawa joined the cast of the film as the original character named Rody Soul in May 2021,[8] as did Kazuya Nakai and Megumi Hayashibara in June as the leader of an organization that threatens the world named Flect Turn and the trusted partner of Rody named Pino, respectively.[9][10] Additional cast for the film were revealed in July 2021, including Mariya Ise as Belos, Junya Enoki as Sir Pentas, Yūichirō Umehara as Shidero, Shogo Sakata as Leviathan, Hirofumi Nojima as Allen Kay, and Yōko Honna as Claire Voyance.[11]

Yuki Hayashi was revealed to be composing My Hero Academia: World Heroes' Mission in March 2021, after previously doing so for My Hero Academia anime series and the franchise's films My Hero Academia: Two Heroes (2018) and My Hero Academia: Heroes Rising (2019).[7] In June 2021, Asian Kung-Fu Generation was revealed to be performing the theme music for the film titled "Empathy" (エンパシー).[12] The following month, the 35th issue of Weekly Shōnen Jump magazine revealed the insert song in the film titled Flowers (フラワーズ), also performed by the same band.[13] The film's original soundtrack was released in Japan by Toho Animation Records and in the United States by Milan Records on August 6, 2021.[14][15]

• Official website (in Japanese)
• My Hero Academia: World Heroes' Mission (film) at Anime News Network's encyclopedia
• My Hero Academia: World Heroes' Mission at IMDb