When Bodie and Brand arrive in San Francisco, searching for a kidnapped young woman, the city by the bay doesn't exactly welcome them with open arms. But danger has never stopped these two before - not even when it comes in the form of a deadly Chinese Tong determined to extend its opium empire as far as the east coast. With the help of Captain Richard Hunt, a British agent from Jamaica, all they have to do is bring the Tong - and its murderous criminal contact Milo Traeger - down...