An English charwoman, believing herself protected by a magic eye amulet, travels to Nazi Germany to personally assassinate Adolf Hitler.

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.