After solving their last mystery at Spooky Island, the Mystery Inc. gang is back in Coolsville, where they are being honored with their very own exhibit at the Coolsonian Criminology Museum. However, when a masked villain steals costumes of classic monsters on display and brings them to life, the gang must come out of retirement to solve the case.
A Californian family inherits a castle in Romania. This is especially exciting to the son, who is obsessed with monsters. And he is not disappointed.
In preparation for a shotgun wedding before the birth of Baby Guster, Shawn and Gus go rogue in an attempt to track down Selene’s estranged husband, as Lassiter grapples with the future of his career.
