在人類滅絕、地球處于后世界末日狀態的世界里，工人機為了生存并打敗“殺手無人機”之類的流氓機器人而不斷努力。 In a world where humanity is extinct and Earth is in a post apocalyptic state, worker drones struggle and toil to survive and defeat rogue robots called Murder Drones.