Gus is back from the mental hospital and he plans on destroying The Troop and taking over Lakewood. But in order to do he kidnaps Mr. Stockley, to enter headquarters and release all the captive monsters.
In the previous episode Jake broke open the portal to bring Candace to the Monster World. But, this releases Monsters into the real world. Now, Jake must go into the real world to retrieve the troop grid.
Jake is initiated into The Troop, a group that protects the town from alien monsters. His first mission is to help his mean neighbors, who have been turned to stone.
A Flaying Pincer Mole has been attacking the school repeatedly and the only way to find its lair is to team up with the Sniffer... an incredibly annoying monster.
Kirby's replacement is not what the Troop had in mind. Meanwhile, Candace and Hayley have a fight over telling Candace her secret and Candace's brother comes to visit.
