Peri wants to know what he's good at. After running from Two-Legs Joe, Peri and Entrèe find a secret room for bowling, Peri realizes that he was born to bowl. However, in trying to prove his bowling ball can be used for other activities, Peri is frustrated by the results and throws the ball into the volcano. After this, an alien civilization, the Pinnians decide to take over the island and treat the mutants like slaves. By realising these aliens have a kinship with bowling, Peri decides to confront them doing what he does best.