Many years ago, there was once a great kingdom called the Moon Kingdom on the Sea of Serenity on the Moon.[1] Within a great crystal palace lived Queen Serenity and her daughter Princess Serenity. The queens trusted advisors were Luna and Artemis from the Planet Mau.[2] The Moon Kingdom was encircled by the kingdoms of the neighboring planets: Mercury, Mars, Jupiter, and Venus; Princess Serenity became close to their princesses. Each princess also acted as a soldier who protected the moon princess at all costs. Little Serenity also had a love interest: the dashing and courageous Prince Endymion from Earth's Golden Kingdom. It truly was a peaceful and beautiful Silver Millennium.[1]
But all was not well in this time. Humans were forbidden to intermingle 
with the "immortals" of the Moon; connections between the kingdoms were presumably political and economical. As you can guess, the love between Serenity and Endymion was a well-kept secret. Endymion would "meet with [Serenity] as often as he could"; nevertheless, they were discovered and separated.
A young Earthian sorceress also had a love for Endymion - though it was unrequited. She witnessed a secret, moon-lit encounter between the forbidden lovers and was emotionally torn. This young sorceress succumbed to her own jealously and malice within her heart and struck a deal with a evil entity. She became the "Queen of Darkness" Queen Beryl and used her magical tactics to brainwash humans to lead a full-force attack on the Moon Kingdom.[3]
The soldiers of the Moon princess fought bravely against the surging forces but to no avail. The evil queen, now filled with power and confidence, confronted Prince Endymion, but he did not waver in his love for his princess. Enraged and hysterical, Beryl committed a serious act of treachery and slew Endymion in front of the tearful eyes of Serenity. The princess - now distraught and broken - could not bear the thought of loneliness; she killed herself so she may die with her prince and her friends.
At seeing the destruction of her palace, her kingdom, and her daughter, Queen Serenity unleashed a great power to quell the anger and hatred around her. She used the mystic silver crystal, a source of magnificent power in the Silver Millennium, to transport the souls of her beloved to the future and seal away the great evil. This activated three Talisman to awaken the power of silence to eradicate the Silver Millennium and bring forth a new era.[1] The good queen did not survive this ordeal...
Tsukino Usagi, 14-year-old third year student at Juuban Junior High, wakes up late to school once again. She's a "boy-crazy crybaby who doesn't work very hard at school and likes to eat" like mad. Usagi's greatest interest is in the warrior SailorV, whose merchandise she buys and video game she plays almost everyday after shool. Her normal life changes, however, after she find a mysterious black cat with a crescent moon on its head. Soon after, her world is attacked by the menacing Dark Kingdom, and the black cat - that Usagi has named "Luna" - magically talks and helps Usagi transforms in the the sailor-suited heroine Sailormoon! With a "little" push from Luna and interventions from a mysterious masked warrior named Tuxedo Kamen, Sailormoon fights to find the Moon Princess and protect the earth from evil!
In the 30th century, in Crystal Tokyo, a kingdom is attacked by a group known as the Black Moon Ichizoku (Family/Clan). Its ruler loses her power to defend her nation and is sealed within a case of ice. Her daughter, Small Lady, discouraged and afraid, meets the senshi of space and time, Sailorpluto, and travels through the Time-Space door to find the legendary power of the past. She lands in the present and confronts Usagi, Mamoru, and their friends with a demand: give her the Silver Crystal? However, the Black Moon follows this "little rabbit" and attacks the present. With the Jakokuzuishou (Evil Black Crystal), they plan to rule the future by destroying the only power that can stop them. Can the Sailor Senshi stop time-traveling enemies? And what roles will the mysterious new soldier and Small Lady play in this mission? Sailormoon and the Sailor Team must once again fight against a enemy and save the earth. But are they strong enough for the challenge?
A dream: the earth covered in darkness, the world in complete silence. Three sacred objects come together and bring the destruction of the world as we know it. Rei and Mamoru sense of coming destruction of the earth but have no idea how to stop it. Meanwhile, a sorceress gazes into her water mirror, disturbed by this vision of the future; she is a member of the Death Busters who have come to the earth. They attack the earth dwellers, prompting the Sailor Senshi to come together again to fight. But, two mysterious soldiers appear with strange objects of great power. Who are these new senshi; are they friend or foe? The fate of the world lies in the hands of the senshi, but Sailormoon is torn between her feelings for her lover and another. How can the senshi fight against these new evils if their leader cannot decide on her own feelings?! The will of the Sailor Team is tested in this race to "break the silence."
The Circus is in town! After a beautiful Solar eclipse, Usagi, Mamoru, Chibiusa, and their friends are entranced by the appearance of an exotic "circus from Amazon." But danger lurks beneath the circus tents. The Dead Moon Circus has come to punish the dreaming senshi and spread their world of nightmares. Meanwhile, Chibiusa is greeted by a strange winged unicorn named Pegasus who gives the senshi the power to fight the circus. The Circus has the ability to disturb the balances of good and evil, thus putting Usagi and Mamoru at a great disadvantage. But also, the Circus heads after the horse Pegasus for his Golden Horn and his power. Chibiusa must defend her new found friend and protect what she believe whilst Usagi and Mamoru struggle to find their way out of the darkness.In a topsy-turvy extravaganza, the 10 Sailor Senshi must battle against the Dead Moon discover themselves and the power of love and dreams. What dream may come, eh?
All life sparks from starseeds. Animals, humans, even planets house a starseed within them. However, special starseeds have everlasting power and shine with the light of the planets. These are Sailor Crystals within each Sailor Senshi, the source of their power. But this power can be stolen ... and the Shadow Galactica plan to do just that. As well, three new senshi appear, seeming to search for a hope that may save the universe. They challenge the power of the earth's soldiers; thus, the final battle for the universe pits the Sailor Senshi against themselves. It's time to tie up loose ends and finally triumph over evil. Can they stop the Shadow Galactica and these new soldiers from complete rule? The Sailor Senshi must battle against fierce warriors and discover they are not alone in this massive universe. The Bishoujo Senshi Sailormoon story is about to come to a close ...
1 Silver Millenium. WikiMoon.
2 Luna. WikiMoon.
3 "Yami no Hitsugi." Eien Densetsu. SailorStars Musical '97.