When a stranger comes to town and threatens to turn the old Parnell mansion into an amusement park, three spunky youngsters join forces with a trio of ghosts to outwit the plan.
Papa Bear's attempt to scare a band of young campers by telling them about ghosts in the woods comes to an unexpected conclusion with a double ghost lesson.
Cassidy, feeling left out at Ghostville Elementary, finds a creepy old doll that even the ghosts seem to be afraid of, and soon realizes she has the power to learn ghostly secrets.
The ghosts of Sleepy Hollow Elementary, bored with living in the basement, decide to cause some trouble in the school, but agree to go back where they belong only if Jeff, Cassidy, and Nina beat them in a game of basketball.
Nina, a student at Sleepy Hollow Elementary, must figure out what is going on when it appears that someone or something is trying to sabotage her birthday party.