Chibi-Usa has returned from the future to complete her training as a Sailor Guardian. She is to learn how to make friends in the twentieth century.
Following Kaolinite's death, Eudial takes over and begins searching for the talismans. Her first target is Maya, a gifted and world-renowned Taiko drummer.
Taking Tuxedo Mask as a hostage, Kaolinite tells Usagi and the Sailor Guardians to come to the top of Tokyo Tower for their final showdown.
Seeing the happy couples around her, Minako starts questioning her life as a Sailor Guardian and the sacrifices she has to make.
Kaolinite sets her eyes on Ami, believing that the famous girl genius would possess a pure heart full of confidence.
Kaolinite has a new target: Makoto. When Haruka and Michiru find out, they decide to use Makoto as bait in order to obtain her talisman.
Motoki's little sister Unazuki is a pure-hearted girl who dreams of sharing her first kiss with the person she truly loves.
Usagi asks her friends to help her become a better person worthy of being Mamoru's bride.
Usagi and Minako sneak off to the arcade to take a break from their life of studying. While enjoying the latest racing game, the girls are approached by a handsome student named Haruka Tenoh, who wishes to join them for a friendly match.
The Dark Gate opens, and Dark Energy spreads everywhere. To stop this, the Sailor Guardians must defeat Black Lady.
Minako and Makoto clash over their opposing views on love. Wanting to break the tension, Usagi takes the girls to check out a new accessory shop, unaware that Petz and Calaveras run the place.
Rei's grandfather is upset over the fact that Hikawa Shrine has had fewer female visitors lately. He then decides to retire as head priest to start a new business, which would allow him to be around young women, much to Rei's annoyance.
Ami is offered a chance to study abroad in Germany, which would bring her one step closer to her dream of becoming a doctor. Knowing how important this is to her, Usagi and the others urge Ami to accept the offer.
Usagi wakes up one morning to find that Chibi-Usa has gone missing. Meeting up with Mamoru, the two search the neighborhood for Chibi-Usa, eventually finding her sitting alone at the park.
While visiting Seijuro and Natsumi's apartment, Usagi and Mamoru come under attack by the Makai Tree.
Ail and An learn that the Makai Tree is beginning to die from lack of energy. Meanwhile, Usagi and her friends visit Seijuro and Natsumi's apartment after hearing that Natsumi is not feeling well.
Usagi and Natsumi both get detention after angering Ms. Haruna during class. The two start working on their assignment when a Cardian suddenly shows up.
Usagi and the girls get into an argument over who gets to play Snow White in the upcoming play with Mamoru. After drawing straws, Natsumi gets the part, much to Usagi's frustration.
Ami and Makoto are trying to figure out who exactly the Moonlight Knight is. Suspecting that Seijuro and the Moonlight Knight may be the same person, Makoto volunteers to investigate by getting closer to Seijuro.
A school festival is going to be held at T.A. Girls' Academy, which Rei attends. When Usagi and Ami go to check up on her, they find Rei busy overseeing the setup and events.