Lin Xia, a strong and successful career woman, reunites at her son's parent-teacher meeting with her first love, Jiang Chen, whom she broke up with seven years ago. To her surprise, he is her son's homeroom teacher—and his biological father. Back then, Jiang Chen's mother, Zheng Yun, forced Lin Xia to end their relationship. Hiding her pregnancy, Lin Xia raised their son alone. After their reunion, Lin Xia repeatedly keeps the truth from Jiang Chen to protect her child. Following several crises, the three finally reunite as a family. When Jiang Chen's mother tries to fight for custody, Lin Xia stands her ground, resolves their past grievances, and ultimately rekindles her romance with Jiang Chen.