――Magical girls are weapons――
――Magical girls do not create hopes or dreams――
――Magical girls drown in pleasure and bodily fluids――

In the not-too-distant future――

Mankind has been waging war with a mysterious race of aliens.

A group of young girls is sent to the front lines, where they take the aliens' power into their bodies, and gain powerful abilities. By being violated by the enemy, they absorb their power, and defeat them while writhing in pleasure.

And so the war continues.
As the minds and bodies of the young girls are consumed by the world.

[Translated from the official site]