The government believes there's something shady happening at a shipyard preparing to build an aircraft carrier, so they recruit “Gallagher” (Pat O’Brien) – along with a fabricated family – to go undercover. He recently worked overseas; his "wife" is FBI agent “Jill” (Carole Landis), and their children are presented as relocated refugees. Gallagher's estranged brother, “Jeff” (Chester Morris), who secured him the posi…