In ancient China, a skilled swordsman named Fang Kang loses his arm in a duel and decides to retire from the martial arts world. However, when his former allies are brutally murdered, Fang Kang returns to seek revenge against those responsible, using his remarkable skills with a single arm.

The martial world is now awash in one-armed knights, who aren't inclined to make any permanent alliances among themselves.

When a skilled swordsman loses his arm in a duel, he must adapt to his new disability and seek vengeance against those who wronged him. Along the way, he encounters intense kung-fu battles, martial arts mayhem, and a world filled with violence and wuxia heroes.

In this martial arts film, a skilled swordsman named Fang Kang loses his arm after failing to protect his master from an attack by a rival clan. He retreats to a humble life but is eventually forced to confront his past and seek revenge when his former master's daughter becomes targeted by the same rival clan.