When the Reds betray the mechs, Zero must find a way to protect his home from an enemy he can't defeat.
On a barren planet he discovers a long lost line of heavy mechs left to rot for centuries. With no hope of escape they've grown unstable but they have information that could lead Zero to an alien race strong enough to help him vanquish the Reds.
They find a stone covered ship that's been traveling the cosmos for hundreds of millions of years, bringing them one step closer to the elusive race, but when they finally meet the plan to unite backfires.
When nothing goes according to plan, Zero relies on luck to save the day, but luck may not be enough to survive what's coming.