Kaitlyn Watson's first semester in college, her best friend Jessie dared her to play a prank on Wednesday Newland—part-time witch and full-time nerd. The prank backfired, but what started with Wednesday punishing Kaitlyn by using mind control to publicly humiliate her ended with Kaitlyn and Wednesday happily dating (and Wednesday continuing to punish and humiliate Kaitlyn). After Christmas break is over, Kaitlyn is looking forward to being tied up, teased, and tortured by Wednesday some more.
And that's what she gets—but Jessie is also back. She's managed to get hold of explicit videos of Kaitlyn and Wednesday, and she threatens to post them to the internet unless she gets what she wants. What Jessie wants is a blue-glass bottle that Wednesday keeps on her bedroom shelf. She's never been interested in Wednesday's witch stuff, but her new boyfriend might be more than he appears.
Kaitlyn knows she's in over her head. The one thing she's sure of is that she's not going to hurt Wednesday again—but how can she think straight when Wednesday has convinced her both to take calculus and to wear a chastity belt?