Thomas Kydd is enjoying the recognition and favour of his fellow officers when his ship, Tenacious, is summoned to join Horatio Nelson's taskforce on an urgent reconnaissance mission. Kydd's newfound ambition fuels his desire to be at the forefront of the hunt. But with power comes responsibility; with responsibility, accountability. Kydd will face his greatest challenge ever amidst bloodstained seas. And defeat will mean humiliation - or death.