 The drama stars Ruco Chan as the series' protagonist, a gifted martial arts novice who, along with a group of young kung fu masters, take down the walled city's largest criminal organisation, the Fellow Association.The drama also stars Nancy Wu, Benjamin Yuen, Philip Ng, Yuen Qiu, Grace Wong, and Moon Lau in lead roles.Chor Au-Kuen (, meaning "left-hooked fist"), portrayed by Ruco Chan, is the main protagonist.