Scooby-Doo and the Island Cats

This Idea takes place, right after Scooby-Doo Return to Zombie Island.

Premise
While the rest of the gang are waiting for a new ferry to pick them up from Moonscar Island, Scooby-Doo has an adventure with the Island Cats, and also learn about the Island Cats' origins, unaware of an evil plot in the form of two ancient spirits, who intend to do harm to the cats...