The play tells the story of the police academy student Lin Qiang (played by Lin Peng) who was mistakenly mistaken for a trader by drug dealers after Cheng Ji, the captain of the Lingnan City Anti-Drug Brigade, was killed during a mission. The police arranged for Lin Qiang to hide her identity and start an undercover mission to collect evidence of drug dealers' crimes. When infiltrating the Qiuhu Group, Lin Qiang met Zhang Xianhe (played by Zheng Yecheng), the adopted son of the overseas drug lord Ma Hongtao. Lin Qiang had to pretend to be in love with him to obtain intelligence, but also to suppress her true emotions. The two of them had a tacit understanding to deal with the two drug lords Qiu Hu and Liu Bing. However, all this was Ma Hongtao's plan, using the power of the police to attack competitors and reap the benefits. However, Lin Qiang's identity was still discovered by Zhang Xianhe, and Zhang Xianhe was in a dilemma. At the same time, the external joint law enforcement team had to find their hiding place before Lin Qiang was discovered by Ma Hongtao. Lin Qiang's life was hanging by a thread. What she didn't expect was that the secret of her biological father was also related to her old enemy Ma Hongtao...