When a judo expert kills his father, Tie Wa (Yuan Chuan) begins training in the mountains with master fighter Red Butterfly (Szu Shih). After years of hard work, Tie Wa masters the powerful Thunderbolt Fist kung fu technique and attempts to avenge his father's death. Full of bone-breaking action, this classic martial arts movie from director Il-ho Jang features intense fight scenes and knockout characters.