He Yu, Lin Jiang's older childhood friend, went abroad to study and settle down. Lin Jiang got together with Jian Yi, a younger man who appeared in her life unexpectedly. At first, their relationship was sweet, but the longer they were together, the more dissatisfied Jian Yi became with Lin Jiang herself, and his mother's-boy tendencies gradually came to light. To win the approval of her boyfriend and his mother, Lin Jiang kept changing herself to fit Jian Yi's ideal type. She even dieted until she developed low blood sugar and had to be hospitalized. Their relationship survived only because Lin Jiang kept giving in. Then He Yu suddenly returned to the country. It turned out he had always planned to come back after completing his doctorate, but his return was delayed by a year, and in that time Lin Jiang had gotten a boyfriend.
Lin Jiang deeply loved her first love, Jian Yi, but she was the only one making an effort in their relationship. The longer it went on, the more unbearable it became. He Yu had always loved Lin Jiang, but since he had come along too late, he planned to bury those feelings and stay by her side as an older brother. As he got a closer look at the relationship between Lin Jiang and Jian Yi, He Yu saw how immature Jian Yi was and realized that Lin Jiang's seemingly peaceful love life was being sustained by her lonely efforts alone. He could no longer settle for being just her brother. In a quiet, steady way, he worked his way into Lin Jiang's life, winning over her parents and friends, and ultimately winning her heart.
Theme: Love yourself before loving someone else, and stay away from mama's boys