To assuage the regrets of his youth, Lin Yan betrayed his gentle wife Song Xiaoran, becoming entangled in a clandestine affair with Su Wan, whose marriage had been ill-fated. The unexpected dual pregnancies, shattered trust, and hasty divorce left him utterly lost between obsession and duty. Only when Su Wan departed with their child and Song Xiaoran refused to look back did he awaken to his folly. Yet all that remained was a lifetime of solitude, paying eternal penance for youthful recklessness and selfishness.