One day, Usagi Tsukino, clumsy 2nd-year middle school student, stumbles upon a talking cat named Luna. Luna tells her that she is destined to be Sailor Moon, "champion of love and justice", and she must search for the fabled Moon Princess. Usagi finds friends that turn out to be destined senshi as well, and together they fight to save the world from the certain doom brought upon by the Dark Kingdom.
Usagi is shocked to find out that she's gained weight from too much eating. Determined to get back into shape and fast, she and her friends join a gym that advertises instant results for its members.
Usagi tries to convince her parents to let her adopt Luna, but her brother Shingo has a great disliking of Luna and slight ailurophobia. Later, a mysterious new pet store opens in town which is selling strange new creatures that put Shingo and everyone else who gets one into a hypnotic trance.
Usagi befriends Yusuke Amade, a jazz musician who is being followed by a Youma, and helps him confess to the woman he loves.
Usagi and Naru both dream of becoming stars like Mikan Shiritori, a graduate from their school. When the girls hear that Mikan is holding a talent contest, they see their chance to achieve stardom.
The Sailor Guardians go to the Dream Land amusement park, where visitors have reportedly gone missing. The team splits into two groups: Usagi and Rei and Ami and Luna. But, much to Rei's frustration, Usagi is more focused on playing than finding the missing people.
Usagi and Ami go to the city to enjoy some shopping, where they find a clock store selling a clock that resembles Luna. Later that day, Usagi is happy to learn that her mother bought the exact same clock as a gift. But that night, the clocks from the store emit a strange light, making Usagi and the rest of Tokyo very impatient.
