A courier package containing methamphetamine disrupted the peaceful life of urban white-collar worker Tan Doudou. The sender was her boyfriend Jin Yuan, who ran away from marriage seven years ago. When he reappeared seven years later, he turned her into a drug suspect. Doudou was angry and aggrieved. She escaped on the way to the police station and went straight to the seaside where the package came from to find Jin Yuan. Jin Yuan was a drug trafficking suspect under surveillance by Huang Weizhong, Qiao Liang and other police officers. He was suspected of using auction transactions to launder money for Cai Bingkun's drug trafficking group. Seeing Jin Yuan again, Doudou still couldn't let go of her old feelings and was determined to take him out of the darkness and start a new life. In fact, Jin Yuan's real identity was an undercover sent by the police's senior director Liu to infiltrate the drug trafficking group. Facing Doudou's warm heart, he had to face it coldly, hoping that she would give up herself and get out of danger as soon as possible. But Cai Bingkun's cunning and viciousness made Doudou really become Jin Yuan's wife seven years later. Jin Yuan, who was alone in the tiger's den, not only had to protect his wife, deal with the provocation of his fellow drug dealers, but also face the pursuit of the police who didn't know his true identity. What's more dangerous is that there is a ghost inside the anti-drug brigade at this time, acting secretly and hard to find. The two "ghosts" start a life-and-death contest, step by step, whoever wins will win the war... In the end, Jin Yuan and the anti-drug brigade won the battle at the cost of blood and smashed the drug trafficking group.