Zombillenium, the Halloween theme park, happens to be the one place on earth where real monsters can hide in plain sight. When Hector, a human, threatens to disclose the true identity of his employees, the Vampire Park Manager has no other choice but to hire him. To see his daughter, Hector must escape from his zombie and werewolf co-workers.

Each episode contains three theatrical Looney Tunes cartoons and an animated direct-to-video Scooby-Doo film with new linking sequences created by removing all the dialogue from existing Warner Brothers' movie or television show, and replacing it with an entirely new recording, the scenes being reedited to fit the fictional studio setting of the show.

M.A.S.K. is an animated television series produced by the French-American DIC Enterprises, Inc and Kenner. The series was based on the M.A.S.K. action figures. It was animated in Asia by studios; KK C&D Asia, Studio Juno, Studio World, and Ashi Production.