The Witch's Challenge

Brittany and her two closest friends, Maddie and Justine are all fired up over the gossip about Cassandra, the recent transfer student. Brittany, the leader of the trio, cooks up a plan to prove the rumors that Cassandra is a witch and a lesbian. Being the leader, Brittany dares them to find a way to get invited to Cassandra's house for an overnight Halloween party, providing ample time for Justine to out the girl as a lesbian and Maddie time to prove she is a witch.
If they fail, Brittany will provide an embarrassing forfeit for the girls to undergo. After the secret planning session, Justine goes home after school with Maddie and they call Cassandra, pointing out being new to the college she hasn't made too many friends and suggest the three of them get together. Anticipating Cassandra would decline, they are overjoyed when the girl not only accepts, but invites them to spend Halloween night at her house.
Maddie has a bad feeling about how easily Cassandra agreed, and tries to talk out of going, and Justine has her own doubts, especially proving the girl is a lesbian, figuring there is only one way to do that, and she isn't comfortable with that and worries that it will be nearly impossible to prove she is a witch. Maddie tells her friend she'll tell Brittany she witnessed Justine with Cassandra in a compromising situation.
What the two girls don't know is that Cassandra has already figured out their plan and intends to teach them a severe lesson.