Pretty Guardian Sailor Moon (美少女戦士セーラームーン ,Bishōjo Senshi Sērā Mūn) is a retelling of the first act of the manga series Sailor Moon by Naoko Takeuchi, who deliberately used Super Sentai traits in the narrative. While just a basic retelling, there are some notable differences from the manga and anime versions, like how one of the team members turned evil near the end of the show, and one of the members dying.
A great evil, consisting of Queen Beryl, her four generals, and an amorphous evil power named Queen Metaria attempt to steal energy so that Beryl can take over the world.
Standing in their way are the Sailor Senshi, five middle-school-aged girls: perky Usagi Tsukino, genius Ami Mizuno, paranormally gifted shrine maiden Rei Hino, tomboyish Makoto Kino, and J-pop idol Minako Aino; two beings that appear to be sentient stuffed cats (Luna and Artemis); and Tuxedo Mask, a jewel thief in search of a Silver Crystal.
Later in the series, Metaria and Sailor Moon each get too powerful to be reined in, and the conflict shifts to attempting to postpone the inevitable destruction of the planet Earth. (It looks like Earth is plunged into darkness and not actually destroyed per se, but the effect is the same.)