Pursuit is about a female special police team led by captain Yu Shaonan who participated in the security of the technology company's press conference. In the middle of the meeting, a killer named Xuan Hemen used hacking technology to dip into the scene and broadcast a bomb threat video. Yu Shaonan judged that there was only one attacker, when he found the attacker, he found that the other party was fighting against him. After a battle, the opponent cunningly escaped. Police insiders quickly identified the two attackers. The Xuanhemen group was originally a three-man hunting gang in the Northeast, Yu Shaonan once killed a man in a campaign, and they have been feuding ever since.