In Shanghai amidst Sino-Japanese warfare an adventurer (Sanders) collecting money from gun suppliers falls in loves with a French singer (Del Rio).

Mr. Dithers invites the Bumsteads on a South American cruise. Somehow Dagwood winds up as the female drummer in the ship's band, while Penny Singleton gets to show off her Broadway background in some lively musical numbers.

A lawyer is framed for the murder of a young party girl and tries to clear his name.

Charming Andre Cassil woos physician Jane Alexander and the two impulsively get married. The honeymoon ends very quickly when Jane voices her progressive views on marriage which include the two having separate apartments. Andre then tries to make his wife jealous in order to lure her into his bedroom.