The time is 2XXX AD, a story in the near future. This is the story of a planet that has been devastated by human warfare. The Republican government organization SG (Safety Guardian) is responsible for transporting important supplies, etc. at the risk of their lives while fully arming their bodies on the ground, which is full of toxic substances, highly toxic plants and microorganisms. Among the SGs, there was a particularly talented group of women called the Armored Angels.
