In 1967, Hong Kong, Ben, Paul, and Frank are childhood friends and members of a gang. They regularly brawl with members of other gangs. Ben becomes engaged to his girlfriend Jane and Frank takes out a loan to pay for the reception. He is attacked by the leader of another gang, Ringo, and they fight over the money. After the wedding Ben and Frank attack Ringo in retaliation and Frank gets carried away and kills him. They meet with Paul and decide to flee Hong Kong to escape the police. They decide to go to Vietnam, as they have heard that there is money to be made as smugglers due to the war.