Masquerade

Bullied boy Kenny Fenderman gets made a junior Ghostbuster, which Peter thinks is more of a game and joke to the boy. The other kids want him to prove himself by staying overnight in a house believed to be haunted. What's more is that Kenny was given an untested device of Egon's, by Peter, that could hurt him more than help. The guys track down Kenny at the haunted mansion, and come face to face with a ghostly general and his minions, and need Kenny's help to stop the ghost once and for all.