When the human deep space fleet was patrolling normally in the asteroid belt, the terrifying Zerg legion suddenly poured out from the depths of the void. Lu Chen led the surviving Star Skeleton fleet to face the endless Zerg invasion head-on in the shattered sea of stars. The survival of civilization hung by a thread, and humanity had to hold the last defense line, kicking off a decisive interstellar battle that would determine the fate of the Milky Way.