Captain Joshua Denning is a veteran of the nighttime cotton runs through the Union blockades off Cape Fear, near Wilmington, in 1863. During a confrontation on the high seas outside Nassau, Denning clashes with an old adversary, Captain Robert Carlisle, from his days at Annapolis Navy Academy ten years before. The next time they meet, when Denning takes on one final blockade run, carrying the greatest shipment of them all, only one will be...