"My Hero Academia Memories" is a compilation film that revisits key moments from the "My Hero Academia" anime series, focusing on the journey of Izuku Midoriya and his classmates at U.A. High School. The narrative centers on a world where superpowers, known as Quirks, are commonplace, and heroes are trained to protect society from villains. Izuku, born Quirkless, dreams of becoming a hero like his idol, All Might, the Symbol of Peace. After a chance encounter, All Might passes his Quirk, One For All, to Izuku, setting him on the path to heroism.

The film highlights pivotal arcs, including Izuku's admission to U.A. High, his struggles to master One For All, and the challenges he faces alongside his classmates in Class 1-A. Key events such as the U.A. Sports Festival, the battle against the League of Villains, and the emergence of the villainous All For One are revisited. The narrative also explores the growth of other characters, such as Katsuki Bakugo, whose rivalry with Izuku evolves into mutual respect, and Shoto Todoroki, who confronts his troubled family history.

Themes of perseverance, camaraderie, and the moral complexities of heroism are woven throughout the story. The film underscores the importance of teamwork and resilience as the students face increasingly dangerous threats, including the rise of the Paranormal Liberation Front. By condensing these moments, "My Hero Academia Memories" serves as both a recap for longtime fans and an accessible entry point for newcomers, encapsulating the essence of the series' emotional and action-packed narrative.