Shun Hayase is a high school athlete who sets a new national record in the men's high jump after overcoming health issues as a child.
The Three Guardians of the Outer Solar System sense something dangerous lurking inside Hotaru Tomoe's personality.
Usagi is very intrigued when she hears Chibi-Usa is going to a “friend's” house to play.
Mimete takes over for the deceased Eudial to gather the pure hearts necessary to awaken the Messiah of Silence. Mimete sets as her first target Yosaku Eda, a popular actor whom she is also a fan of.
Uranus and Neptune are revealed to be the ones possessing the talismans. In order to save the two, the Sailor Guardians go after Eudial, who is on the run with their talismans.
Michiru and Haruka sense that soon they will find the talismans.
Mamoru and the girls receive an invitation to a party hosted by Edwards, an Englishman who lives alone on the outskirts of the town.
Saphir learns of Wiseman's true intentions and tries to warn his brother, only to be attacked by Wiseman himself. Barely managing to escape, Saphir is surprised when he is saved by Petz and her sisters.
Chibi-Usa finally decides to return to the future to save her mother. With support from the Sailor Guardians and Tuxedo Mask, she overcomes her fears and opens the Door of Space and Time.
After being out sick a couple of days, Chibi-Usa returns to school eager to see her friends. But to her surprise, her friends and teachers begin attacking her.
Artemis is out to prove he is capable after being teased by Luna. While on patrol, he encounters a suspicious-looking man who is gathering stray animals.
Usagi is still depressed over Mamoru calling off their relationship. Ami and Mako try to cheer her up by taking Usagi to a promise ring workshop.
The Black Moon clan sends down its next operative, Esmeraude, to open the Dark Gate in 20th century Tokyo.
Chibi-Usa falls into a coma after coming down with a mysterious fever. Usagi and the others are at a loss for what to do, when a Sailor Guardian calling herself Sailor Pluto suddenly appears before them.
Ami enters the World Chess Tournament, which is being held at the newly constructed Chess Tower. But Bertheir is also there, forcing Ami to transform and reveal her identity as a Sailor Guardian to the enemy.
Wiseman predicts that Chibi-Usa will appear at Hikawa Shrine. Learning of this, Rubeus orders Koan to go down there and eliminate their target.
Mamoru has a dream in which a mysterious voice warns him that being with Usagi will bring her great misfortune. Meanwhile, Sailor Moon is put into a deep coma after being attacked by a Droid.
Chibi-Usa leaves the house after being scolded by Usagi. Roaming the streets alone, Chibi-Usa is overcome with sadness and begins to cry, which draws the attention of Rubeus and the Four Spectre Sisters.
The girls enjoy some vacation time on an island. But during lunch Chibi-Usa and Rei get into a small fight, causing an angry Chibi-Usa to go out to the sea alone.
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.