Stealth Walker
In the treacherous underworld of Lingnan City, Officer Lin Qiang (Lin Peng) goes undercover in the dangerous Qiu Hu Group to avenge her fallen colleague, Captain Cheng Ji. Infiltrating the drug organization, she befriends Zhang Xian He (Zheng Ye Cheng), the adopted son of a rival drug lord, Ma Hong Tao. As Li Qiang strategically gathers evidence to dismantle the criminal network, her professional mission becomes complicated by unexpected personal feelings. When Xian He discovers her true identity, her carefully constructed cover is blown, placing her in extreme danger. Caught between her mission, her growing emotions, and the imminent drug lord war, Li Qiang must decide how far she's willing to go to achieve justice. This is a 2021 South Korean crime drama directed by Hong Ling.