Maeve, a succubus-in-training, is sent to the human world by her mentor, Veril, to learn how to blend in and hone her skills of seduction. The rules of the Demon World are complicated, though, one of them, "Don't fall in love with your target," looks like it might be a little too easy for Maeve to break, especially after she meets Aiden.

Maeve, a succubus-in-training, is sent to the human world by her mentor, Veril, to learn how to blend in and hone her skills of seduction. However, things get a little complicated after she meets Aiden, a smart but unmotivated student at her new high school. Unfortunately for her, Sylne, the head succubus of the Demon World, has set a spy on her former protege to catch any missteps.