Do you want to live? In the darkness of a WWI battlefield, young Legionnaire Edouard Montreuil lies dying. As teeth nibble his flesh, a voice whispers, Do you want to live? Frightened and desperate, Edouard bargains his freedom for a second chance. Aboard the Flèche, a grim submarine captained by the nightmare who granted Edouard new life, Edouard pays the price for his survival. Each night, he gives his body to his captain as the bells sound first watch. But surviving is not living, and as the days stretch into months beneath the waves, Edouard grows desperate for escape. Can Edouard’s old comrade Farid Ruiz help him break this devil's bargain, or will Ruiz fall to the same fate, trapped beneath the waves at the mercy of a monster whose hunger knows no bounds? Edouard and Ruiz served together once before, and slept together too, but courage and passion failed to save them from the eldritch beasts who roamed the night. This time, the cost of failure is nothing so clean or simple as death, and the spoils of victory are not just life, but love.