After five years in a loveless marriage, Tang Zhiyi endured Gu Jingxing's cruelty - he treated her as a stand-in for his idealized first love Tang Weiwei, while she stayed believing her deceased lover Gu Xingzhi's heart had been transplanted into Gu Jingxing. When Tang Weiwei reappeared, Gu Jingxing abandoned Zhiyi. Her resolve shattered upon discovering the heart was never transplanted into him, exposing their entire marriage as a fraud. Determined to reclaim her life, Zhiyi launched an investigation revealing Tang Weiwei's involvement in Gu Xingzhi's death, unraveling a web of medical fraud and stolen identities.
