Kim Namjoo has taken on her twin, Lee Choonhee's identity. Here's what she knows: Lee Choonhee was surrounded by male friends. Her sister had a lover, he didn't want her baby, so she got rid of it and died in the process. Given a chance with another life, Namjoo now finds herself surrounded by both enemies and friends who she will have to learn to differentiate from liars and honest ones. The deeper Namjoo gets into Choonhee's oppressive world, she is challenged with discovering which man was her sister's lover and who were her real friends - if she had any friends at all. Even worse, Namjoo will have to learn to outsmart those who want to reveal her identity and get her behind bars. Will she fall victim to Choonhee's fate and disappear like her twin?