Welcome to the dark nightmare future of the 41st Millennium, the grim era of the Imperium. The battlefield is spread across a thousand different worlds. Powerful armies of Space Marines, Imperial Guardsmen, bestial Orks, and Tau warriors are in constant conflict, unleashing carnage via mechanical war machines, crushing artillery, and vast starships. Fire Warrior follows one day in the tumultuous life of a young Tau warrior who must battle alone against a force that shows no mercy: The Imperium. The Tau will soon learn there is a darker foe at hand and become entangled in a frightening story that leads them through an ongoing war.