In the future, humanity was attacked by aliens. By using the latest technology and a huge army of robots invaders gradually jostle earthlings.100 years after the beginning of the war, people are only a few cities located deep on the ocean floor and cut off from the surface. Aliens suspend advance and save up forces for a decisive attack, in order to finally rid the planet of its former owners. In order to avoid total annihilation,inside one of the human cities, people secretly created a secret weapon designed to protect the whole of humanity. This secret weapon - a detachment of five modified cybernetic girls, each of which is endowed with super abilities. Armed and equipped with the latest technology,"Angels" (this is the name of this order) are prepared to give the enemy the last fight.