After an accidental car accident, 25-year-old Lin Wan "traveled" into a 40-year-old middle-aged woman Lin Huilan, the mother of her ex-boyfriend Chen Mo while in a coma. When she re-entered Chen Mo's life as a "mother", she discovered that this young man whom she had misunderstood as "cowardly" and "betrayal" hid a heavy secret that protected the family with youth and forbearance. A 25-year-old soul trapped in a 40-year-old body reveals the truth about the breakup in his youth from the perspective of a "mother". In the blurred boundary between family affection and love, he re-understands another form of "love" - not possession, but sacrifice and fulfillment. In the process of playing "mother", Lin Wan makes up for the impulse and regret she had when she was 25 years old, and learns to reconcile with her past self; under the gentle protection of "mother", the rebellious young man Chen Mo gradually sheds his disguise and faces the fragility and longing in his heart.
