As a frontline police officer, Li Chengyang faced oppression from all sides, framed by evil forces, and even his boss, the chief of public security, in order to prevent him from investigating.

• Sun Honglei
• Zhang Yixing
• Liu Yijun
• Wu Yue
• Maggie Jiang
• Wang Zhifei
• Liu Zhibing
• Wu Xiaoliang