He works as a delivery boy at a small noodle shop and lives with his mother (Pat Ha) in a large, dilapidated Kowloon housing estate.

As a young boy he enjoyed nothing more than watching his favourite anime, Space Emperor God Sigma, and singing along to Leslie Cheung's theme song with his father.

However, after seeing his dad shot dead trying to apprehend a bank robber, Siu Sheung has spent the last twenty years wandering aimlessly, looking for a way to bring justice back to the community.

Desperate for the money, Siu Sheung takes the job and soon finds himself working as personal bodyguard to Hon Yu's beautiful yet feisty daughter, Annie (Stephy Tang).

When Shing embarks on a violent coup to overthrow Hon Yu, Siu Sheung is forced into action, not only to protect Annie, but to defeat evil and restore peace and harmony to the community.