The mainly evil Mantis Fist school and the righteous Eagle Claw have fought out a bitter rivalry over many years. The culmination in this progressive clash is the death of the Eagle's Claw school master due to a severe beating by his savage, eccentric rival. With the school now in turmoil, the dying master leaves the responsibilities of his legacy to his second most senior pupil (Wong Tao) while ignoring the quietly seething senior student (Chi Kwan Chun). The forgotten man cannot contain his rage for long though and storms off to the Mantis Fist school out of spite. While at his new school, the senior student begins to attract the attention of his new master's daughter and makes strong progress in the Mantis Fist school. However, his former friends continue to harbor resentment after his sudden exit and refuse to let the rivalry end. All is not as obvious as it seems though and the real motives of each character is revealed before the classic fight finale.
A young woman collapses on the disco dance floor of what's revealed to be strychnine poisoning. Assuming that this is an attempt at suicide, her boyfriend and doctor have her committed to the Fifth Floor, an asylum with obviously crazy inmates and a predatory orderly.
Burt Reynolds plays a legendary stunt man known as Sonny Hooper, who remains one of the top men in his field, but due to too many stressful impacts to the spine and the need to pop pain killers several times a day, he knows he should get out of the industry before he ends up permanently disabled.