讲述了地球上发现的一艘被遗忘的古飞船。侦查员将她运送到月球上，她遇到了令人印象深刻的机器，保存着那消失了很久的文明的智慧。

After being relegated, the two fighting brothers signed up for a new game. But they didn't know that they need to stay in an arena to fight zombies.