The third season of Cinderella Girls Gekijou.

The story tells the story of a blood-red moon suddenly appearing in the sky, which is known as the red moon event in history. The remaining survivors had to hide in the city protected by high walls. Among the survivors, some people also suffered from mental mutations. Among them, those who could not control their own mental mutations would emit mental plague and radiation. It contaminates the normal people around it and poses a great threat to the surviving humans. In order to solve the source of the pollution, High Wall City established a special pollution cleanup department, recruiting people who can control spiritual energy, and our protagonist Lu Xin is applying for the most dangerous cleanup department!

At the end of Arcadia of My Youth Capitain Harlock and the crew of the space ship Arcadia had been banished from Earth. The Earth, as well as many other planets in the universe had been taken over by the Illumidus, a race of destructive humanoids who ruin, enslave or destroy almost any inhabitable planet they come across. In "Endless Orbit SSX" Harlock battles the Illumidus while searching for a mythical "Planet of Peace" where all the peoples of the universe can live freely and without war. (Source: Wikipedia)

Mary Bell, a magical girl who looks like a girl around five years old, comes to the human world from a magical world called "Flower Magic World", and helps and encourages people. (Source: Wikipedia)