He Wei is in his thirties, clean and refined, displaying a gentle disposition, really likable. He works as an evaluator of accidental harm for an insurance company. In a traffic accident, he runs over a girl on a bike. He sends the injured girl to the hospital. The accident does not hurt the girl. However, during the examination, they happen to detect tumors in her brain. Her family cannot afford the expensive surgery expense. He Wei forges an insurance paper for the girl at the convenience of his work, which solves the medical expenses for them. Xiao Feng and Xiao Ke are two sisters depending on each other since childhood. Their parents were murdered. Xiao Ke is weak and easy to be ill since an early age. She relies on medicines to sustain her life. Having just turned 20, she is walking to the end of her life. Knowing she does not have much time, Xiao Ke wants to finish the last stage of her life at her will. She wants to find a boyfriend and fall in love before she dies. By accident, Xiao Ke encounters Mr. Lin. He is about He Wei’s age. Xiao Ke gets attached to him at the first sight. However, he is unhappy and weird, claiming he is tired of living. When love is imminent, Xiao Ke happens to find some stuff at Mr. Lin’s home which showed up by accident. They remind her of the past. What she finds later makes her reach a cruel judgment. With a lot of doubts in mind, she suspects the criminal who murdered her parents was her brother-in-law, 13-year-old He Wei at that time. This discovery drives Xiao Ke to put aside her former wish. Now she has a new goal: she must reveal the truth of the murder. Xiao Feng, who is pregnant, goes out of town on business. Taking advantage of this chance, Xiao Ke fastens unprepared He Wei back to her home. The mystery is unfolding. Does He Wei have unspoken facts, or Xiao Ke is going crazy because of her pain? In the face of everything, how will Xiao Feng and Mr. Lin make their choices?