A career-long undercover Hong Kong cop is sent to Mainland China when his former protégé becomes the primary suspect in a murder.

• Beijing Starlit Movie and TV Culture
• Donnie Yen
• Jing Tian
• Andy On Chi-kit
• Ronald Cheng Chung-kei
• Nina Paw Hei-ching
• Collin Chou
• Yang Zhigang
• Terence Yin Chi-wai