The Invincible Dragon

The undercover agent with a dragon tattoo, Kowloon, continually helped the police to solve mysterious cases, which made him known as a rising star. However, his impulsive personality dragged him into endless troubles. He got himself into fights with the Macau detective, as well as an American Army veteran Alexander who has a secret linkage to Kowloon’s background.
(Source: PlayAsia)