Qin Guan, the leader of the Special Service Squadron of the Armed Police Corps, was eager for revenge. He failed to rescue the hostages forcibly during the operation, causing the terrorist "Blood Wolf" to escape and the hostages were killed. Qin Guan was demoted. The army decided to recruit female soldiers to join the special service team. When Qin Guan took over, he witnessed Lemon, a female martial arts student, maintaining justice on the street. He greatly appreciated her skills and mobilized Lemon to join the army. Chen Xuan and Liu Zhenzhen, who were in the same bedroom, decided to apply with their friends.