Gloves Come Off(2012)

TONG SHAP-YAT enters the underground boxing scene for money and learns Thai boxing with his brother KO WAI-TING in Thailand, a decision he regrets for the rest of his life. In order to turn over a new leaf, he withdraws from the boxing scene and finds himself a job as a security guard at a sports goods company. His outspokenness attracts the attention of his supervisor CHAI PAK-FAI.