A beautiful temptress re-kindles an old romance while trying to escape her past during a tension-packed train journey.

Captain Alan Gaskell sails the perilous waters between Hong Kong and Singapore with a secret cargo: a fortune in British gold. That's not the only risky cargo he carries; both his fiery mistress and his refined fiancee are aboard!

Landing at a Chinese port, tough sea captain Bucklin and his passengers are threatened by a marauding war lord, who intends to kill the captain and hold the others hostage as part of his campaign of destruction against all white men.

Seeking to avoid arrest while fleeing through a city park at night, two jewel thieves, Gordon and young Tommy, stash some just-stolen jewels on elderly, unknowing Martha Abbott. They then invite Martha to come live with them as their housekeeper, duping her into helping fence their goods. When Martha eventually becomes aware of the criminal activities, she strives to help Tommy reform.