Charlie brings a new kitty named Buster over to Harry's house. Harry thinks the new kitty is very cute and small and Nana suggests that they take the kitty out to the backyard. There, Harry's dinosaurs spot the kitty and believe it to be some kind of new toy, or a new dinosaur. Then, the kitty scares them all and the lot of them end up in Dino World. Harry heads to Dino World to search for Buster, while Charlie waits in case Buster comes back. Harry convinces the dinosaurs that Buster is a nice kitty and they all go on a safari to get him back. They face obstacles including think jungle and the legendary Soda Fountain Valley.