After your successful mission on the starship Marathon, you find yourself under the control of the rogue computer Durandal, who compels you to carry out tasks in a remote region of the galaxy. Your objective is to explore the remains of an ancient civilization, locate the remnants of a lost clan, and unveil their hidden knowledge. Prepare yourself for encounters with formidable and ancient adversaries, armed with advanced weaponry and cunning tactics. Throughout your journey, you must strive to survive the nightmarish alien environment and find a way to break free from Durandal's grip.