In the late winter of seventeen years old, the introverted and taciturn Shen Mo was desperate because her grandmother was critically ill, so she knocked on the door of the boxer neighbor Gu Ye's house. Gu Ye, who had scars all over his body from the boxing ring, gave away all the hard-earned money he earned with each punch without asking for any reason, without even asking for an IOU.
Two teenagers in the cold winter became each other's only light in their company, and a special affection quietly developed in the difficult situation. But the past events, coupled with Gu Ye's dark past, eventually forced the two to separate for six years.
In the past six years, Gu Ye has become a world-renowned boxing champion, and Shen Mo has become a top trauma therapist. The two have always adhered to the love in their hearts. When they reunited in the rehabilitation hospital, years of longing and regrets surged up. Gu Ye used gentle companionship to break the gap and make up for the debt. Fortunately, it was not too late, even though they had missed an entire youth.