While shopping for his Halloween costume, Tom stumbles upon a mysterious wizard's hat. Unbeknownst to him, this was a magical hat, fueled by the powers of his imagination. The reluctance of Tom's friends' to believe in the hat's magical powers leads him to enlist the help of an unlikely adversary. This Halloween, with the aid of Jack and his magical pumpkin army, Tom is ready to face Jeff and his gang of bullies.