U.S. sailor Jimmy Harrigan, on shore leave in San Pedro, meets and falls for Sally Brent She promises to wait for him when he ships out to San Francisco, but Jimmy becomes jealous and tells her off when he learns Sally has entered a marathon dance contest sponsored by a lecherous snake named Baron Portola. Along with several of his Navy pals, Jimmy goes to the ballroom the nigh...
In London a young lady meets a homeless and apparently penniless Russian prince. She introduces him to her middle-class Fulham family and he moves in. It turns out he still has a number of diamonds given him by the last czar, and he is persuaded to start selling them. The resulting money, and his princely notoriety, soon cause changes in everyone's lives.
