Through the Unknown Martian Sea lies a lost city tormented by the red sands. The Vanguard tells us what little we know of this once great city. This city was renown during the Golden Age as a city of prosperity, now it lies hidden and under enemy occupation. They pervert the broken streets and trample on the graves of the ones that came before us. The duty has fallen to you as a Guardian to take back our lost territory and stomp out the foreign invaders. Now it's time to make yourself legend. Get out there and show them just what we are made of!