Aka：古惑仔4：战无不胜 / 97古惑仔之戰無不勝 / 97 Goo Waak Jai Jin Mo Bat Sing / กู๋หว่าไจ๋ 4 อันธพาลกวนเมือง / Người trong giang hồ IV: Chiến Vô Bất Thắng / 고혹자 4 - 전무불승
Summary：The boss of the Hung Hing gang, Tian Sang, has died. Ho Nam and Hon Bun find Sangs younger brother, Yang to lead the gang. Meanwhile, Hon Bun receives news that his younger brother, a leader of the Tuen Mun gang has been assasinated. They travel to Hong Kong to settle the matter.
