This film is known as Vietnam's first martial arts blockbuster. The story is about the mid-15th century, when the King of Lang Son rebelled and killed his half-brother Le Nhan Tong and Queen Mother Nguyen. After seizing the throne, he acted cruelly and violently, which aroused the resistance of loyal ministers and martial arts heroes, and eventually overthrew him. Nguyen Vu's family was destroyed by the King of Vietnam, and Nguyen Vu was the only survivor. Nguyen Vu investigated and found that his family was framed for participating in conspiracies and crimes that had nothing to do with them. He was determined to restore justice and wash away the honor of his family.