The gang is very tired in enforcing Slugterra. So the gang head for a mall to relax, play games, and buy a new bag for Pronto. When they arrive, they are chased by zombies. They are aided by a mall slinger and try to find the cause for zombies in the mall. Pronto is taken to Mr. Saturday by the zombies. He is also turned into a zombie by Mr. Saturday who uses a Cryptogriff (Ghouled Hypnogriff). The gang defeats him and the Cryptogriff is cured by Doc. All the zombies including Pronto return to their original state. Mr. Saturday is sent to mall jail.