In the late Qing Dynasty, a wealthy Cantonese man, Master Law, dotes on his youngest son, Chan Lung, who has a fascination with martial arts. Believing himself to be proficient due to paid-off opponents taking dives to stroke his ego, Lung lives in a bubble of false security and pride. Frustrated by his son's arrogance and obliviousness to genuine skill, the family's loyal servant, Leung Foon, who is secretly a skilled martial artist himself, feels compelled to expose Lung to the harsh truth of his actual capabilities. This revelation comes when Lung insists on proving his prowess against a real martial artist, leading to a humiliating defeat that shatters his delusions of grandeur.

Disheartened but enlightened to his own lack of expertise, Lung pleads with Foon to teach him genuine martial arts. Foon agrees, and under his guidance, Lung begins to train earnestly, embracing the grueling path toward true skill. Meanwhile, Foon introduces Lung to the legendary opera performer and martial artist, Master Tam, who is known for his unbeatable Wing Chun technique. Lung's world expands as he gets absorbed in the rigorous and disciplined lifestyle of a genuine martial artist, setting aside his previous pretenses and dedicating himself wholly to the art. As his skills progress, unwelcome challenges and rivalries surface, thrusting Lung into a world where only true mastery and inner strength can shield him.