Set in 1930s Shanghai, the story opens with legendary gambler Gon and his vow to recover his father's casino from Shanghai tycoon Fung In his quest, he becomes acquainted with Sou and uncovers her fiance's nefarious conspiracy. Sou gives her heart to Gon, but he can't forget his old love Gu. Meanwhile, up-and-coming gangster Hui Man Keung is quickly making his name in Shanghai. Crossing paths during chaotic times, Hui, Gon, and Ding Lik become brothers and business partners, but Fung recruits Hui and Ding to his side through backhanded methods. Though deeply in love with Fung's daughter Ching Ching, Hui can only turn away from love and friendship when Fung's true nature is revealed. Fung, however, is not about to just let Hui walk away.
