Casey befriends Louden, a shy, withdrawn, new kid, who has a passion for dinosaurs.

While on a mapping expedition with Jeremy's great-aunt Adelaide, Denver and the gang run into two bizarre alligator poachers, and a love-sick alligator, who mistakes Denver for one of his own kind.

The boys receive an invitation from their friend Senior Santos to spend a relaxing week at a resort located on the mythical island of Canatta.