It's love at first sight for singer John Craddock and Jane Blodgett who meet while John is seeking a radio job with the "Blodgett Dog Biscuit Hour," and John learns that the sponsor is Jane's father, Warren Blodgett, an avid souvenir and antiques collector. John gets himself in bad with Blodgett...
Aircraft are being shot down by a large black plane with a big "X" painted on the wing. The chief suspects are invited for the weekend to an old dark mansion.
During World War I, Rin-Tin-Tin finds that he must rescue his master, a fighter pilot, from his wrecked aircraft. He also has to help him escape his rival, who has ordered him shot so he can have the girl they're competing for all to himself.
Police detective Lanny resents the ongoing interference of the local FBI branch. Hoping to show up the feds, Lanny tackles a baffling espionage case. Things heat up when reporter sweetheart Ollie is framed for murder.
