In the blood-red seas of Eldrathis, where iron empires rise to burn the ancient forests, one scarred pirate captain stands defiant. Jax Blackblade, betrayer, lover, killer, sails the living ship Bleak Siren into the jaws of annihilation, carrying the stolen Heart of the Eldwood and the last hope of a dying world. Hunted by Admiral Voss and his fleet of blue-fire leviathans, Jax must choose to heal the Heart and save the elves he once betrayed or watch Eldrathis choke on ash and iron. From storm-lashed raids to the apocalyptic siege of Crimskull Cove, bonds will shatter, legends will bleed, and the sea itself will scream. One ship. One heartbeat. One final war. Tides of Eldrathis: when the world ends, only pirates can save it, or burn it down trying.