In the early 1970s, the Governor of Hong Kong decided to clean up the police force. The ICAC was established, whose operation branch was headed by Yim. Bong and Unicorn also joined the ICAC. Despite threats of violence and intimidation, they managed to bring about the downfall of the empire of graft.

Eason Chan Yik-Shunas Det. Sgt. Major Gale
Tony Leung Ka-faias Chief Sgt. Major. Lak Chui
Anthony Wong Chau-Sangas Unicorn Tang
Alex Fong Lik-Sunas Bong
Bowie Lam Bo-Yeeas Inspector Yin
Kate Tsui Tsz-Shanas May
Young Liuas Rose
Natalie Meng Yaoas Unicorn's Girlfriend
Nina Paw Hei-Chingas Bong's Mother
Wong Jingas Gold / Mr Chu
Venus Keung