Group President Gu Qinglan returns to China and encounters her old love Shen Yanchuan. Seeing an old photo, she mistakenly believes he betrayed her back then, takes out her anger on his daughter Shen Zhixia, revokes her study abroad quota, and suppresses Shen Yanchuan. Plant manager He Guangcheng takes the opportunity to commit fraud, and equipment hidden dangers cause an accident. Shen Yanchuan is seriously injured. Through a blood type clue, an eighteen-year misunderstanding is untangled: Shen Yanchuan was raising his sister's orphan and endured a painful breakup so as not to drag down his lover. The truth comes to light, He Guangcheng is held accountable, Gu Qinglan lets go of her years-long knot in her heart, the two put the past behind them, support each other honestly, and Shen Zhixia successfully goes abroad to study.