Obsessed with Muay Thai boxing. Kevin along with his Senior Kenny Wong (黃德斌), begins boxing in Thailand’s black market out of greed. As a result, Kevin commits an error that haunts him for the rest of his life. On his return to Hong Kong. And eager to forget his turbulent past, he finds a security job in the department of a sporting goods company. Though hopes of a mundane life, Kevin attracts the interest of his superior, Selena Li (李詩韻). When Kevin is involved in a misunderstanding with office assistant Raymond Wong. They discovers their mutual passion for Muay Thai boxing. Kevin's return to boxing comes via Dragon Fist Hall. Where he is to nurture the talents of both Raymond Wong and mute boxer, Nancy Wu (胡定欣). As mentor, Kevin reignites his passion for boxing and towards redemption. Unfortunately, Kenny plots against Kevin's every nurture for Raymond as his envy grows towards Kevin’s success. Turning student against master in an eventual climax that will test both trust, tenacity and friendship.