They are the surviving soldiers of the Southern Frontier Post. There are only five of them left. The post was destroyed by an unprecedented force, and circumstances were such that no one would come to their rescue. They can only rely on themselves. To return to the earthly colony, the legionnaires have to overcome a long journey across the unexplored planet Omega-13. To do this, in the unknown depths of space, they rallied into the “Battle Fist”.