A sculptor who doesn't want to have any part of World War I is shamed by his girlfriend into joining the army. He becomes a fighter pilot, and undergoes a complete personality change.
The adopted daughter of New-York-City gambler, Al Draper, elopes from quarantine (key plot word) with another voyager from Europe. Later she is found murdered in a hotel room. Draper is dissatisfied with the handling of the case by the district attorney and sets out to work the case himself.