Earth Rescue Day

末日救援

Also known as 地球救援日, Alien Troopers, Rescue the Earth, Dünya'nın Kurtuluş Günü, Mori jiuyuan

Mankind is forced to live underground after a giant alien descends upon our planet. After spending years below, a team of braves a finally ready to head back to the top and fight for their planet, with a secret weapon that has been years in the making.