The tragic war that took place on Mars in 2099 ushered in the era of a fortress for the Federation to resist alien aggression. On Mars, the greatest miracle creation of mankind stands at the other end of the abyss, and the one as tall as Mount Everest is staring at the abyss. Terrible existence. The channel of life, the call of glory, the fallen believers, the immortal watchman... who is stationed for the blue planet? Who is looking for the hope of counterattack? To the invading demon... , Spit out the last mouthful of blood! For the homeland, fight to the final chapter! 【Expand】【Collapse】