An eccentric, wealthy spinster, 'Queenie' Baxter is erroneously presumed to be kidnapped. She subsequently pretends to indeed be kidnapped, , in order to allow a reward of $50,000 to benefit an impecunious family headed by Tony Orsatti and his three sons, Blackie, Doc and Flash.

A spy steals a secret military device, then hijacks an airliner to get away. The airliner crashes in the wilderness & the survivors are threatened by a raging forest fire.

Right after the Civil War, an ex-Union soldier sets out to become a schoolmaster in his small town, even though many locals still harbor a resentment against "Yankees". He goes up against the town bully, who both want the same girl, and his troubles multiply when a vicious band of nightriders set out to drive him out of town.

Best friends Kenneth Reynolds and Raymond Jordan are U.S. Navy officers, and Kenneth is engaged to Raymond's sister. But the eruption of the Civil War divides them, as Raymond stands by his native Virginia while Kenneth remains on duty as a Northern officer. Kenneth's uncle, John Ericsson, designs a new kind of ship, an ironclad he calls the Monitor. Eventually the war pits Kenneth, on board the Monitor, against his friend Raymond, serving aboard the South's own ironclad, the Merrimac (as it is called here). A naval battle ensues, one that will go down in history.