Usagi and her friends go to a ski resort to participate in the Moon Princess Contest, unaware that it's part of Kunzite's plan to eliminate the real Moon Princess. During the ski contest, Usagi and Rei end up falling for the trap.
Usagi decides to take the Princess Seminar course at Rose Mansion to become more princess-like, and the other Sailor Guardians join her. But unbeknownst to them, this seminar is actually a trap set up by the Dark Kingdom to find Sailor Moon.
Usagi is haunted by dreams of Tuxedo Mask, who has been abducted by the Dark Kingdom. Minako takes Usagi to a popular hair salon in the Juban District, hoping it will help take her friend's mind off of her recent worries.
Tuxedo Mask is fatally wounded while protecting Sailor Moon. Responding to Sailor Moon's tears, the seven Rainbow Crystals gather to form the Legendary Silver Crystal, and she is transformed into Serenity, the Moon Princess that everyone has been seeking.
Now that Sailor V (Sailor Venus) has joined the team, all of the Sailor Guardians are finally together! Zoisite has discovered that Tuxedo Mask is actually Mamoru Chiba and challenges him to a showdown for possession of the Rainbow Crystals.
When the exploits of a Sailor Moon imposter become quite the sensation, the real Sailor Guardians step in to investigate. They soon learn the whole thing is a trap set by the Dark Kingdom to lure out Tuxedo Mask and seize the Rainbow Crystals.
Umino seems to have fallen in love with Naru. Unfortunately, Naru only considers Umino a friend, so Usagi decides to play Cupid by getting free tickets to the amusement park and urges them to go on a date together.
Usagi and friends meet a girl who they believe holds the final Rainbow Crystal. Zoisite also pursues her. But when neither Usagi's Moon Stick nor Zoisite's Dark Crystal reacts to the girl, they realize it's her pet cat that possesses the Rainbow Crystal!
Grandpa Hino has become emotionally unstable, causing Rei to worry. The new apprentice Yuichiro tries to cheer her up by blaming Grandpa's behavior on the weather. Realizing that Yuichiro likes Rei, Usagi tries to help their relationship along.
Usagi and Makoto are shocked to discover their crush Motoki has a girlfriend named Reika. His relationship is in jeopardy, however, due to Reika's chance to study abroad. With nothing to lose, Usagi and Makoto aggressively go after Motoki's affection.
Usagi and Naru attend an art exhibit by Yumemi Yumeno, whose works are known for helping people find love. Usagi is surprised when she and Mamoru, who also happen to be at the exhibit, are both asked by Yumemi to become models for her latest painting.
Usagi learns that a transfer student named Ryo Urawa seems to have a crush on Ami, and tries to help him out. But Ryo, who secretly possesses the ability to foresee the future, finds out that he is destined to fight Ami as a Monster.
The Sailor Guardians grow in strength with its newest member Sailor Jupiter joining the team. Sailor Moon is appointed as team leader and is handed the Moon Stick, an item that can locate the seven Rainbow Crystals.
A new girl named Makoto Kino transfers to Usagi's school, but her tough attitude seems to scare everyone away. Usagi, however, quickly becomes friends with her. Meanwhile, the Dark Kingdom is plotting to revive the Seven Great Monsters.
Rei goes off on a luxury cruise with Ami after winning tickets through the local lottery. Feeling left behind, Usagi sneaks aboard the ship disguised as a photographer.
The Sailor Guardians go to the Dream Land amusement park, where visitors have gone missing. The team splits into two groups with Rei pairing up with Usagi. But much to Rei's frustration, Usagi is more focused on playing than finding the missing people.
Several people who take the bus near the Hikawa Shrine have started to go missing. Usagi and her friends decide to investigate by visiting the shrine, where they meet Rei Hino, a girl with strong spiritual powers.
Usagi and Ami go shopping, where they find a store selling a clock that resembles Luna. Usagi is happy to learn that her mother bought the same clock as a gift. That night, the clock emits a strange light that causes Usagi to become very impatient.
Usagi befriends Ami Mizuno, the school's smartest girl, who has an IQ over 300. But Luna, who senses an unknown energy coming from Ami, suspects her of being a Monster.
Usagi and Naru both dream of becoming a famous star like Mikan Shiratori, a graduate from their school. When the girls hear that Mikan is hosting a talent contest, they see their chance to achieve stardom.