Henry Danger: The Movie

Scientists at Evil Science Corp successfully create the Reality Altering Device (R.A.D.), but it's stolen during transportation when Missy Martin, disguised as Kid Danger, secretly infiltrates and steals the device. Guards fail to notice her, and she skillfully evades capturing, escaping with the R.A.D. back to her home. She is a devoted Kid Danger fan determined to bring him back to life.

Back at her home, filled with Kid Danger memorabilia, Missy activates the R.A.D. intending to resurrect Kid Danger and fight crime in Newtown. She is motivated by a desire to see her hero return, unaware that Henry Hart, the real Kid Danger, is alive and has been in Dystopia.

Henry Hart has faked his death and moved to Dystopia, where he fights crime alongside Jasper Dunlop, who has developed unique skills such as fighting in his sleep and speaking Spanish. Henry is awaiting the arrival of his friends and continuing his new life away from the limelight.

Blackout, a supervillain, attempts to steal plutonium to destroy Dystopia's nuclear core, leading to a city-wide blackout. Henry abandons a public event to stop him, aided by Jasper and Schwoz. Henry fights Blackout in an alley and defeats him publicly, though tensions with Jasper arise over recognition.

Henry finds that Blackout has vandalized his posters in anger, signaling ongoing threats. Meanwhile, Missy activates the R.A.D., bringing her fan-fiction stories to life and transporting Henry to her room in a new superhero suit, setting the stage for their unexpected encounter.

Missy's fan-fiction creates a fictional villain, Coach Cregg, who attacks an innocent woman. Henry intervenes reluctantly but is overpowered, discovering that Missy's stories have altered his abilities. Missy rescues him using the R.A.D., escalating their adventure into alternate realities.

Vampiper, a vampire version of Missy created out of spite, arrives seeking the R.A.D. A narrow escape leads them into an '80s-themed nightclub where they encounter alternate versions of their friends. They learn that the R.A.D. is stuck in 'story mode', forcing them to travel through fanfiction realities to escape.

In a post-apocalyptic world, Henry and Missy are helped by a survivalist Jasper variant who aids them against Canadian Mounties. They realize they need the crystal in Vampiper's possession to restore their original universe and continue their fight to save reality.

Vampiper captures Missy's sister Gemma, prompting Henry and Missy to launch a rescue mission. Henry battles Vampiper while Missy sacrifices herself to obtain the crystal. Schwoz prepares to restore reality using the crystal inserted into the R.A.D.

The team defeats Vampiper and her minions, restoring reality with the crystal. Henry and Missy reconcile, acknowledging her bravery. As the realities collapse, Henry appreciates his friends, and Missy vows to continue fighting crime inspired by her experience.

Henry and Jasper re-encounter Blackout, defeating him once more, with Henry allowing Jasper to take credit for the victory while he goes on a date with Detective Jones. Their teamwork highlights ongoing threats and camaraderie.

Henry, Jasper, and Schwoz attend a show, and Henry visits Newtown where he helps Schwoz and Piper deal with troublemakers. He invites Missy to be his sidekick, marking the start of their partnership and ongoing crime fighting.

The credits feature the alternate Frankini performing in the '80s-themed nightclub, providing a glimpse of the fan-fiction universe and hinting at ongoing adventures or alternate realities.