Charles Rane, A Vietnam veteran, returns home after years at a POW camp and can be treated as a fanatic. After thugs invade his house to steal they mangle his hand and leave him and his family to get dead. Rane becomes more obsessed with getting revenge and survives. Inspired by his friend Johnny Vohden, Rane, now wielding a hook for one hand, sets out to his mission of vengeance.