Every class has one, the overachiever know-it-all who makes everyone else look bad. In their class, it’s Corina Hart. A psychology major dedicated to making sure her teachers know how smart she really is, Corina is determined to be the best. Arrogant and snarky, she thinks she is smarter than everyone else until three of her classmates decide to teacher her a lesson in Changing Corina, a 30,000 word novella. Before long, Corina be diapered and learn how to be a sweetly adorable baby girl.
During their last psychology lecture before spring break, Brandon, Steven, and Alexa make a decision. After their vacation, they have to do a presentation for the class. Brandon convinces them to take a college girl and regress her back into babyhood.