The game takes place in the universe of Warhammer 40,000: Dawn of War, on a planet called Tartarus. You play as Gabriel Angelos, the commander of the Space Marines, who comes to the planet to fight the Armada of orcs because they have become a real problem of the star system. Later he learns that the Chaos forces are the leaders of the Orcs. The Sorcerer, Sindri Myr betrays his master, Baal. Then Gabriel was betrayed by his friend, who gave the sorcerer Sindri Myr a mystical artefact - Maledict...