Sailor Moon R

Sailor Moon R is split into two different arcs. During episodes 47–59, space aliens Ail and An, disguised as normal students, arrive on the planet. During episodes 60–88, Sailor Moon and the senshi fight against the Black Moon family (Rubeus, Dimando, Saphir, Esmeraude, Wiseman, etc.). We find out that Dimando is in love with Princess Serenity, and he wants her for himself. Chibi-Usa also arrives.

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The season is divided into two arcs: One arc being An anime filler (to give Takeuchi Naoko time to make the next manga), and the other arc being the actual Black Moon plot.
The first arc shows Usagi and Co. having their memories restored from the first season. Their enemies are a pair of aliens, Ail and Ann, who are seeking human energy to restore their life tree. Mamoru had yet to recover his memories and he appeared as the Moonlight Knight rather than Tuxedo Kamen. This arc only lasted for 13 episodes.
The second arc introduces Chibi-Usa, a little girl from the future who is searching for the Silver Crystal. The new enemies are the Black Moon Clan, comprising of the Ayakashi sisters (Cooan, Beruche, Karaberas, and Petz), Rubeus, Safir, Esmeraude, Prince Demando, and Wiseman. They too want the Silver Crystal so that they can take over the future. The Sailor Senshi's adventure continues...

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With Queen Beryl defeated and her Dark Kingdom destroyed, Usagi and the rest of the Sailor Senshi have returned to their normal lives, with one exception: none of them have any recollections of ever being Senshi! When a new threat appears in town, will the girls regain their memories in time for Sailor Mars, Sailor Venus, Sailor Jupiter, Sailor Mercury and Sailor Moon to save the day once more? And just who is that little girl with the pink hair? Only time and transformations will tell!