Action Kamen, a popular TV hero, is attacked and severely injured on set, forcing his stunt double to take over. Meanwhile, Shinchan and his friends reminisce about their Action Kamen trading cards. However, Shinchan notices something's off when he watches the show, as the actor has been replaced. The next day, he discovers a new candy store run by Action Kamen and his sidekick Mimiko, and finds a rare card with the number 99.
Kureyon Shinchan: Action Kamen vs Haigure Maô
In this thrilling adventure, Action Kamen, a legendary hero, arrives in Shinchan's world seeking the help of the mischievous Shinchan and his family to defeat the powerful Haigure Demon.