Undercover police officer Zhang Jiuchuan, using the alias Uncle K, has infiltrated a telecom fraud park in the northern part of Sifang. Just as he is about to complete the mission and close the net, he learns that his daughter, Zhang Wanwan, has been lured to the same park by her close friend Wang Lei. Heartbroken after being abandoned by her boyfriend, Zhang Wanwan trusted Wang Lei's promise of a high-paying job and came to Sifang, only to find herself trapped in the telecom fraud syndicate, subjected to imprisonment and threats. While searching for his daughter, Zhang Jiuchuan navigates the criminal underworld under the guise of the northern park's boss and head of Team A. Meanwhile, Zhang Wanwan endures a perilous escape within the park, repeatedly facing kidnappings and persecution by individuals such as Qu Zhan, Qu Xiaotian, and Sister San. Ultimately, father and daughter confront the antagonistic forces at the northern exit, awaiting the arrival of rescue.
