While China is traumatized by military cliques during the Warlord Era in the 1920s, Japan has grown into the most powerful foreign national group there, taking over much of Northern Shanghai. Although the city is being torn by international settlements, the upscale Casablanca nightclub remains a haven for a wide range of clientele: Chinese entrepreneurs, British officials, Japanese military, and spies desperate to overthrow the growing Japanese power in China. Everybody comes to Casablanca for a reason, including the legendary hero Chen Zhen incognito. Disguised as a masked warrior, Chen is determined to thwart the imminent Japanese invasion by rescuing as many people as he can from Japan's assassination list. Things become more complicated as he soon finds himself enamored with a sultry Casablanca singsong girl, Kiki, who is harboring a dangerous secret of her own.