Mankind's newest fleet has just been obliterated. Attacked without warning, enemy unknown. Their last transmission originated from a world on the edge of known space.

Alpha Company is dispatched to investigate. They're the best of the best. Hardcore warriors piloting battle-tested mechs, they've never lost an engagement.

Until they arrive on Ganog 7.

Now, shattered and stuck behind enemy lines, the remnants of Alpha Company struggle to survive. Between them and escape stand three Planetstriders, thousand-meter monstrosities capable of destroying an orbiting capital ship.

In order to survive, they must disable these titanic war machines, an impossible task made even more difficult by the discovery of a terrible secret - one that must reach fleet command, no matter the cost.