The Go Go Dinos welcome Poki as their new member! Poki is asked to joing the Go Go Dinos on an exploration, but he is covered in dirt from digging, and goes to the river to clean off. Here Poki meets an Apatosaurus family, and they have a nice visit. When Poki is about to leave, a rain storm comes, causing the river to rise and putting the Apatosaurus family in danger . .