Forty-two millennia later, the entire empire is caught in an endless war. The human empire tries its best to maintain its rule, while facing the fierce invasion of alien races, the secret sabotage of chaos sects, and internal corruption and power struggles. The former AI forces (Iron Man) were almost completely wiped out in past wars, but as an intelligent commanding Iron Man that was accidentally activated, Axe is inevitably involved in the entanglement of various forces.