After 19 years, Lee Eun Chae suddenly discovers she has an abandoned sister, but it seems as if she's too late. Her long-lost sister commits suicide, and Eun Chae is left to pick up the pieces. Along the way she meets Kim Jun Su, her sister's boyfriend, and so begins a story of a sort of tragic kind of redemption, as both resolve their feelings towards a girl they both loved in their own way.