One day, Wong and Cheung accidentally killed one of the gangsters. They fled to Shanghai. The prosperity of Shanghai was a shock to them, Wong decided to build himself up. Through his wisdom and martial art skills, many other gangsters turned to be his follower. He became a reputable big boss of Shanghai under the French leased territories. Meanwhile, Cheung was jealous of Wong's growing power, in despite of their relationship, he wanted to split up. Tao, who defeated by Wong, persuaded Cheung to go for another big boss, Lam, of the British leased territories. Lam decided to kill Wong because of his growing power. After a vigorous struggle, Wong proved himself to be the winner and deserved to be the only big boss of Shanghai.