While Jaco takes a lunch break, he accidentally loses the custody of a parasitic alien named Watagashi (綿餓死). On Earth, Gohan and Videl learn that Mr. Satan is starring in a new superhero film: titled "Great Saiyaman vs. Mister Satan"! Gohan's family visit the set and are introduced to the film's leading actor, the famous yet self-absorbed Barry Kahn whose attempt of flirting with Videl is spurred in front of the film crew. Gohan later decides to serve as Barry's stunt double to impress Pan, Barry allowing it with the thought that it would embarrass and potentially maim him. But Gohan uses his powers as to easily take on the role. Gohan later dons the suit again for a fight against a pair of bank robbers from his past, one of them turned into a monster Gohan defeated before noticing Watagashi escape into a sewer. Though Bulma covers for him when the film crew nearly deduced him to be the real Great Saiyaman, Gohan's secret is found out by the film's co star Cocoa who blackmails Gohan into flying her around the city. But the two are attacked by Jaco as he assumes Great Saiyaman is Watagashi's host.