When Teresa Walsh was a child, she saw her mother and brother murdered by Dixie Levine, who transplanted Teresa Walsh's brother's heart to her son, Ethan Klein, so Teresa Walsh set out to get close to Dixie Levine's son, Ethan Klein. Klein, she has more than ten years of step by step, and finally sent the murderer to prison, but she found that after the revenge she is not happy, her and Ethan Klein's emotional entanglements are still interfering with their own again and again ....