Ace detective Shen Huaichuan is worn out coping with his wife Qin Xiangnuan’s postpartum depression. Gradually losing patience with her, he is deliberately misled by his apprentice Xu Wenyan into believing Qin is faking her illness to escape family responsibilities. Their marriage falls apart step by step as his distrust deepens.
Overwhelmed by despair, Qin Xiangnuan commits suicide. Before her death, she finds their child has been caught up in an illegal pharmaceutical conspiracy and is in great danger, yet her husband remains completely deceived by Xu Wenyan’s lies.
The truth only comes to light when a monk reveals everything to Shen Huaichuan. Stricken with overwhelming lifelong regret, he finally understands all the pain and sacrifice his wife bore. After cracking the illegal drug case, he ignores his bureau director’s dissuasion, resigns from the detective agency, and chooses to die for his wife. He reunites with Qin Xiangnuan in another world, completing his belated protection and atonement through de