After a cruel campus prank leaves shy college student Stacy publicly humiliated, she discovers Cassian, an ancient incubus trapped inside a mysterious sex toy. He offers to transform her into an irresistible woman and teach her how to make every man who rejected her beg for attention - especially her longtime crush, Jack. But every lesson charges the magical artifact that holds Cassian captive. As Stacy grows more confident and powerful, the attraction between student and demon becomes dangerously real. What she doesn't know is that when the artifact reaches 100%, Cassian will finally be free - and Stacy's soul will take his place inside it forever.
