Greece in the age of Heroes. Patroclus, an awkward young prince, has been exiled to the kingdom of Phthia. Here he is nobody, just another unwanted boy living in the shadow of King Peleus and his golden son, Achilles. Achilles, 'best of all the Greeks', is everything Patroclus is not - strong, beautiful, the child of a goddess - and by all rights their paths should never cross. Yet one day, Achilles takes the shamed prince under his wing and soon their tentative companionship gives way to a steadfast friendship. As they grow into young men skilled in the arts of war and medicine, their bond blossoms into something far deeper - despite the displeasure of Achilles's mother Thetis, a cruel and deathly pale sea goddess with a hatred of mortals. Fate is never far from the heels of Achilles.