Big Wolf on Campus - Season 1 Episode 20
The Exor-Sis

Merton was going to throw a party but no one would receive his invitations, plus Tommy and his buddies make fun of Merton, hurting his feelings. When Merton confronts him about it Tommy starts to wolf out but Merton wont help. But accepts Tommys help after a big announcement Tommy makes in the cafeteria. So Tommy helps him out on the appearance of theparty. Meanwhile, Mertons sister is possessed by a demon from a locker under the school. Merton gets caught but doesnt get in trouble because of 2 things. They were happy he was trying to fit in, and they get a hot tub.