Lee Seul is the Crown Princess of The Kingdom of Corea and is the little sister of the King, Lee Gon. She liked Jo Yeong since they were kids, but their relationship became undefineable as they spent five years apart. They grew up. With the Parallel Universes colliding, she meets Jo Eunsup, Yeong's counterpart from another world. He has all of the personality Seul wanted Young to have, but as reality is defined, Seul gets in a dilemma. Would she choose the reality she wants, or the reality she has?