Cascy Beddow

An awkward, telekinetic teenage girl's lonely life is dominated by relentless bullying at school and an oppressive religious fanatic mother at home. When her tormentors pull a humiliating prank at the senior prom, she unleashes a horrifying chaos on everyone, leaving nothing but destruction in her wake.

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.