In the year of 1910, Hong Kong members of the secret Red Dragon Tong crime family protect their identities by murdering Helena Sale, the daughter of Captain Jackson Sale, a British sea officer who vows revenge and defies the spread of fear created by the tongs. Helped by a mysterious beggar and a young serving girl named Lee, Sale discovers there is an inside traitor who has been giving vital information to the tongs, thus making them one step ahead of Sale's findings...