Leslie has a twin,

A twin that’s not a twin,

A twin that lies within.

Leslie is a college student that lives an ordinary life. She's in love with her boyfriend Kris and leading a great life. Nicole is also a college student training to be a professional pianist with her boyfriend Lay. Both are leading happy and amazing lives with their true loves. Except for one problem, they are exactly alike. Their lives completely changed when they find out about one another's existence.