Chen Yi, who was working alone at the age of 16, met him who changed her life. The love that was completely wrong in terms of age, timing and morality has entangled her for fifteen years. She clearly knew that she was wrong and that her behavior was contemptible, but it was too difficult to let go. She spent fifteen years and would rather play the role of a completely negative third party, but she still couldn't escape. In this stage of life full of transitions, another man suddenly breaks into Chen Yi. Can he save himself and escape?