Ring World
The Ring that took the astronauts now attacks the Bilkis. Even worse, Beatrice is still unconscious from when the brain shut down from information overload. Hiroto passes out in the middle of the battle, and Mario assumes command of the Bilkis. Mika battles the Ring alone in the Shaft, but Mir suddenly switches positions and takes the main driver's seat. Before she can do anything, though, a script executes. The Shaft performs a new, incredible maneuver that destroys the Ring. Unfortunately, this only leads to the appearance of multiple Rings!
Aired 17/05/2001EP 7 - Ring World

Gene Shaft
In the 21st century mankind was on the brink of destruction. Through genetic engineering however they eradicated such feelings as love and the desire for power. Since women are naturally less agressive than men, women to man ratio was set to 9:1. Now people are engineered to have skills that others view as being necessary. There is a giant ring that now orbits the earth, that sits there and relays information back to an alien race that sent it. Now a team of five women will try to eradicate the alien threat.
(Source: Anime News Network)