The planet is called Goros. The air is unbreathable, and to thin for flight. the water is is poisonous. It is home to the most implacable enemies that equestria has even en-counted.

Body armor has been devised for the commando forces that are to be dropped on

Goros. A trooper in this armor is a one pony, atomic powered battle fortress. But he will have to fight an nearly endless hoard of biological mindless war minions, Changelings.

Snow flake is a scout in A team Two, Highly competent, he is the sole survivor of mission after mission. Yet he is a pony consumed by fear and hatred. And he is protected not only by his custom fitted power armor but by an odd being that lives in him, a cold and callous killing machine he calls "The Engine"