Struggling to juggle her normal life with the responsibilities of being Sailor Moon, the defender of love and justice, Usagi Tsukino teams up with her fellow Sailor Guardians and her boyfriend Mamoru Chiba to investigate the strange occurrences at Mugen Academy. There, students are mysteriously transforming into monsters, leading them to encounter three enigmatic individuals: the dashing racecar driver Haruka Tenou, the skilled violinist Michiru Kaiou, and the delicate Hotaru Tomoe. As the incidents escalate, a new twist unfolds with the arrival of two mysterious planetary protectors who harbor their own agendas. Despite doubts about their intentions, all must unite against a mutual foe – the sinister Pharaoh 90 threatening their world.