My Babysitter’s a Vampire - Season 1 Episode 2

Erica decides to join the cheer squad. But, Sarah realise that she's only out for revenge of the head cheerleader Stephanie who use to bully her. So Sarah also joins to keep an eye on her. But Benny and Ethan don't think one's another, so THEY join as well, as Betty and Veronica. But soon, Benny finds out that the cheer that they are learning isn't a cheer, it's an incarnation. So they have to stop Stephanie before she get's her way and becomes immortal.