Grizzly Griller is casting for an animal sidekick in an action-packed feature film. After lame auditions from Rasher the pig, and Clawdia the cat, Gnasher steals the scene with an extreme skate stunt!

Gnasher now spends all his time in front of the camera with Grizzly Griller, and starts to miss his friends. Without Gnasher, the gang keeps trying to sneak onto the film set, but they soon find themselves in trouble. 

Will Gnasher choose the life of a glamorous film star, or will he come to rescue Dennis and the gang?