Thomas Kydd is in Halifax, enjoying the recognition and favour of his fellow officers when Tenacious is summoned to join Horatio Nelson's taskforce on an urgent reconnaissance mission. Intelligence suggests the French Revolution is about the set the Mediterranean ablaze, but Bonaparte's fleet is nowhere to be found. Nelson and his Band of Brothers begin a desperate search for him. 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.