Three years ago, police officer Liu Yuan Wen sends back wrong intelligence, seemingly causing the death of his fiancée and fellow police officer Rong Yu. He also loses a friend in Rong Yao , his brother-in-law-to-be and member of the drug task force. Disheartened by all the events, Liu Yuan Wen resigns from his position and cuts off all contact.
In the present time, Rong Yao has been promoted to leader of the task force, and is ordered to provide ongoing support and resources to the sole undercover operative in Group K, a drug cartel led by the ‘Spectre’ Mr. Ou. Turns out the undercover Mu Qing is actually Liu Yuan Wen, and the pair must work together to bring the criminals to justice.
该剧讲述了缉毒警穆青以卧底身份深入贩毒集团内部,阴差阳错之下,与贩毒集团头目之女欧可欣产生情感纠葛,并与其联手阻止新型毒品流入中国的故事