Bodyguard: A New Beginning (2008)

'A New Beginning' focuses around the story of Leung, the bodyguard of a Chinese Triad boss, Wong, to whom his loyalty is unrivaled. Living in Hong Kong, Wong requests that his bodyguard travel to the UK to protect a young British woman, whose true identity is known only by Wong himself. Even his own errant son, Yuen, is kept in the dark, which leads to a betrayal that threatens to destroy the family and all that his father has worked hard to protect.

Source: TMDb