Passion, intrigue, adventure, love-- everything happens in the yellow Rolls-Royce, a luxury automobile that ties together three stories as it passes from owner to owner. In the first, an aristocrat with a penchant for the racetrack discovers his wife has a penchant for backseat amour. Then a moll takes a spin down lover's lane in the Rolls while her mobster boyfriend is busy rubbing out the competition. Finally, an imperious widow purchases the car and drives straight into danger as she helps an anti-fascist escape the Nazis.