Qiu Jianbang (Kaneshiro Takeshi) was a serious and responsible homicide detective before his girlfriend committed suicide, but since his girlfriend committed suicide, he has become depressed and addicted to in alcohol. Qiu Jianbang's friend and boss Liu Zhengxi (played by Tony Leung) bears the hatred of exterminating the family. In order to get revenge, he married his enemy's daughter Jin Shuzhen (played by Xu Jinglei), and set up a seamless murder trap based on his years of experience in solving crimes, and successfully killed himself. Father-in-law - former enemy. Jin Shuzhen originally had a happy family, loved her father dearly, and loved her husband deeply, but suddenly one day, her father was killed, and the murderer was most likely her husband. Jin Shuzhen asked Qiu Jianbang for help. Alcohol did not dull Qiu Jianbang's brain. He remained sober when everyone was confused by superficial phenomena. After his in-depth investigation, he was getting closer to the truth. Liu Zhengxi's ultimate goal is to kill Jin Shuzhen and inherit her 300 million property, so he set a trap again, but he didn't expect that after years of getting along day and night, he has already fallen in love with Jin Shuzhen. Will his plan succeed this time? Can Qiu Jianbang stop him