Melisa is a psychology student short on money for tuition. When she is invited to participate in an experiment that will not only grant her enough money to pay her school but also extra grade points, she can't pass it up. The only problem is she needs a guardian to watch over her while she does it. The only person she trusts enough is Jeremy, her best friend's brother, and the man she has had a crush on since they were children.

Jeremy does not want her to participate in the experiment which is a drug that will make her think she is a child again. Somehow Melisa persuades him. The results of the experiment force them both to deal with their true emotions toward each other.