A steel statue has been unearthed from deep within a mountain. No one's sure what it is, but rumors abound that it may be an ancient, mechanical warrior. Those rumors turn out to be true when a mechanic named Nicholas succeeds in awakening it.

At the same time, destructive beasts from ages past suddenly appear. With no way to fend off the onslaught of the beasts, the citizenry have no choice but to flee. All appears to be lost, save for Robomi, who was created to defeat the beasts. The fate of the people, and perhaps the world, lies with her and Nicholas.