Tummi and Gruffi go on a ocean voyage, only to become stranded on a deserted island populated by an eccentric Gummi artist.
When Tummi builds a boat, Gruffi tries to convince him to dismantle it, but reluctantly agrees to one trip. This trip takes an unexpected turn when they end up on an island inhabited only by another Gummi Bear - an artist by the name of Gusto.—Attmay