Alien alienation catastrophe swept the world, civilization collapsed, and the earth became a scorched earth. The remaining forces of mankind formed the EDA Earth Defense Alliance and built defense lines at six core locations in Beijing, Tokyo, Los Angeles, Paris, Brasilia, and Denver. They used flesh and blood as shields and fighting spirit as spears to prop up the last barrier of human civilization.
In the main battlefield of the East, Long Che led an elite team to defend Beijing's defense line in a bloody battle, fighting against alienated behemoths in a desperate situation without aid, and tracking down the shadow of a traitor lurking in the alliance amidst the undercurrents. In the Tokyo war zone, ten soldiers also fought for survival in the ruins, echoing Long Che's team from east to west.
The six major stations are fighting each other and are entangled with each other. Artillery fire on the front lines tears through the haze, and undercurrents of conspiracy are surging behind. From refusing to give in an inch of ground in the Red Stone Highlands to desperately holding on to the global defense line, countless warriors have sacrificed their lives to protect mankind's last home and hope in the devastated apocalypse.
On the ashes of the earth, there are endless guards; in the end of the world, mankind will never retreat!