In 1930s China, a Wing Chun master arrives in Tianjin with the ambition of opening his own martial arts school to preserve his lineage. To do so, he must first follow a local tradition: train a disciple who can defeat eight of the city’s established martial artists. He takes on an eager but inexperienced apprentice and begins rigorous training, navigating the politics and rivalries of Tianjin's tightly-knit martial arts community.

As he and his disciple progress through their series of challenges, they gain both allies and enemies. The master finds himself entangled in a web of deceit, power struggles, and the treacherous aspirations of others in the martial arts world. His principles and patience are tested as he works to secure his place and protect his legacy. Along the journey, questions of loyalty, honor, and the true meaning of martial arts come to the forefront as the master confronts not just opponents in physical combat but also moral dilemmas that threaten his very existence.