Bulldog Drummond is a British WWI veteran who longs for some excitement after he returns to the humdrum existence of civilian life. He gets what he's looking for when a girl requests his help in freeing her uncle from a nursing home. She believes the home is just a front and that her uncle is really being held captive while the culprits try to extort his fortune from him.
Slim Jim Carey, the leader of a criminal gang, is in reality a nobleman called Lord Talbois, and his daughter is the rightful heir to the family estate. When "Slim Jim"'s gang finds out about this, they conspire to cheat her out of her inheritance by passing off one of the gangster's girlfriends as the real daughter. Unbeknownst to the gang, however, their leader isn't dead and finds out what they're up to. Complications ensue.
Charming Sinners was a stilted adaptation of Somerset Maugham's play The Constant Wife. Robert Miles (Clive Brook) starts the ball rolling when he falls in love with Anne-Marie Whitley (Mary Nolan), the best friend of his own wife Kathryn (Ruth Chatterton). In retaliation, Kathryn begins a flirtation with her former boyfriend Karl Kraley (William Powell). After reels and reels of verbal fencing, the status quo is re-established, and Robert and Kathryn are reunited.
Laura Sergeant (Leatrice Joy), together with her husband, Humphrey Sergeant (Sidney Blackmer) operates a scam scheme to extort money from millionaires through blackmail and victimization until she mistakenly victimizes Tony Williams (Walter Pidgeon), the man she really loves.