Rocky is the triangle player in the orchestra. On their first wedding anniversary, his wife leaves home. Close friend Charlie and his cohabiting girlfriend Miaofen decide to introduce a girlfriend to Rocky to fill his empty heart. In a traffic accident, Miaofen gets injured and hospitalized. Charlie has to travel for work, and Miaofen is very unhappy with his behavior of prioritizing profit over their relationship. Instead, Rocky takes great care of her, turning their friendship into love...