In the eleventh book of this popular series, Napoleon Bonaparte continues planning for the invasion of England as Admiral Horatio Nelson and the Royal Navy patrol the seas, seeking out their elusive enemy. When convoluted political machinations in England lead to the impeachment of the head of the Navy, Commander Thomas Kydd is forced to choose sides. Eager to take on the real enemy, Kydd decides to join Nelson's squadron just before the Battle of Trafalgar, the greatest sea encounter of all time. Amidst the chaos and bloodshed, Kydd and his shipmates must prove once and for all that the Royal Navy truly rules the seas.