|Sam Lee||To Chung-Chau, 'Moon'|
|Neiky Yim Hui-Chi||Lam Yuk-Ping, 'Ping'|
|Wenbers Li||Ah-Lung, 'Sylvester'|
|Amy Tam Ka-Chuen||Hui Bo San, 'Susan'|
After his father abandons the family, Autumn Moon drops out of high school and becomes a money collector for organized criminals the Triads. On his rounds, he meets and falls in love with Ping, a daughter of one of the Triads' debtors. She is suffering from a fatal kidney disease, and to pay for her medical expenses, Autumn Moon takes an assassination contract, but as he slips deeper into the criminal underworld, he's haunted by a figure from his past.