Iron Man 4: Legacy of the Arc Reactor (2025) marks a significant evolution in the Marvel Cinematic Universe, focusing on the next generation of heroes. Directed by Jon Favreau, the film introduces Morgan Stark, portrayed by Katherine Langford, stepping into her father’s legendary armored boots.

Set several years after the events of Avengers: Endgame, Morgan, now a teenager, discovers a secret workshop left behind by Tony Stark. Among the advanced technology and unfinished projects, she finds an experimental suit designed specifically for her, codenamed “Ironheart.”

As Morgan delves into the suit’s capabilities, she uncovers a conspiracy involving Stark Industries’ former rivals and a new threat aiming to exploit her father’s inventions for nefarious purposes.

The film explores themes of legacy, responsibility, and self-discovery, as Morgan grapples with the immense expectations placed upon her while forging her own identity. With the guidance of allies like War Machine (Don Cheadle) and Pepper Potts (Gwyneth Paltrow), Morgan embarks on a journey to protect her father’s legacy and the world.

Iron Man 4: Legacy of the Arc Reactor promises to blend emotional storytelling, cutting-edge action, and a deep dive into Tony Stark’s enduring legacy, ushering in a new era for the Iron Man mantle.