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.

Denver fantasizes about battling evil aliens from Pluto in a 1950's style sci-fi adventure.

Mario reads a story he wrote to Denver and the gang, which comes to life with the aid of their imaginations, leading them on an adventure involving a magic cavern filled with treasure, a flying carpet, and a genie in a lamp.