Shanghai to San Francisco1848 Shanghai. Chinese martial arts master, Yi Xiao, is summoned before his grandmother, Madam Lang. His lookalike cousin, Yi Zhu, is next in line to throne and must reach his dying father to rightfully claim the title of emperor. But an army of assassins is on the hunt for the prince. It is Madam Lang's plan to convince them Yi Xiao is the royal heir and have him flee the country; destination San Francisco.And so Xiao embarks...