Midshipman Johnnie Wharton has no idea when he joins HMS St George as a 12-year-old that he is soon to take part in some of the greatest sea battles of Nelsons Royal Navy. Life aboard his next ship HMS Gibraltar is tough for the youngster and he and the other officers face disgrace as his Captain blunders badly at the Battle of the Glorious First of June.

After a century of war, revolutions, and imperial conquests, 1790s Europe is still embroiled in a battle for control of the sea and colonies. Tall ships navigate familiar and foreign waters, and ambitious young men without rank or status seek their futures in naval commands. First Lieutenant Alexander Clay of the frigate Agrius is self-made, clever, and ready for the new age. But the old world, dominated by patronage, retains a tight hold on advancement.

Lieutenant Gilbert Maltravers is bored. It is 1912 and he has been promoted as fast as any in his Dartmouth class and is placed in a battleship where he can confidently look forward to promotion to post captain and a battleship of his own by the time he is forty. All he needs to do is keep a smart ship, polish the brass and salute every senior officer, while wearing an expensive uniform that testifies he is one of the right sort. His father is an admiral, so very little can go wrong.

I was the Rift Magus—master of space and time, protector of worlds. For decades, I defended my realm with unmatched power. But when an unspeakable creature threatened everything I held dear, I was forced to create a rift to nowhere—a trap designed to seal it away for all time. It worked, but the creature was not without power itself.

Captain Carlisle hails from Virginia, a loyal colony of the British Crown. As the clouds of war gather, Carlisle's small frigate is ordered to Toulon on a reconnaissance mission. If battling the winter weather in the Gulf of Lions is not a sufficient challenge, Carlisle must also juggle the delicate diplomatic issues in this period of pre-war tension while contending with an increasingly belligerent French frigate. But Carlisle has additional problems unique to his colonial origins.