The Secret Six are the six puppies of the world champion Crissie destined to be the next best dogs in the world while being owned by Mr. Big. They won the dog competition when the Cat Creature attacked the same day, as they were dog-napped, with the money they made they bought a farm with Mr. Big where the Demon Farmer attacked just to steal Big's delicious popcorn's recipe. They last time they met with Scooby Doo they were in the army when another monster attacked, the Gold Monster as one of the puppies got golden...