Five years after their breakup, Shi Nian struggles to get by with her adopted daughter. When picking up her child from school, she is rear-ended three times by her ex-boyfriend, Gu Xun, who is driving behind her. Blinded by past illusions, Gu Xun is convinced that Shi Nian betrayed him for money back then, and publicly humiliates her with cash. Shi Nian only wants to live a stable life with her adopted daughter. Unexpectedly, An An suddenly falls ill with anemia and is hospitalized, filling Gu Xun's heart with mounting doubts. Through Gu Lin and Wen Yao, the truth comes to light: there was a different culprit back then, Shi Nian willingly shouldered the blame to protect him in secret, and An An is actually the orphaned child of his life savior. Overwhelmed by sudden realization and remorse, a repentant Gu Xun desperately intercepts Shi Nian as she plans to move far away, determined to spend the rest of his life making up for the hurt he once caused her.