It's been 20 years since the Earth Government and the Corporations battled for supremacy. Another mysterious entity has entered the picture - snapping up all the available Ravens for intense missions that only their custom-built Armored Core Units can handle. As a Raven, you know there's always another mission waiting for you - does it really matter who hires you? We didn't think so. But just the same, keep your back covered, Raven.