While running to Juban Public Middle School, 14-year-old Usagi Tsukino briefly encounters a cat with a crescent-shaped bald patch on its forehead after tripping over it. Elsewhere, a shadowy man named Jadeite creates a woman out of clay and orders her to steal a "Legendary Silver Crystal". Usagi and her friend Naru Osaka visit her mother's jewelry store, which is undergoing a sudden sale. After a brief encounter with a man wearing a tuxedo, the cat appears again, revealing her ability to speak and introducing herself as Luna. Luna gives Usagi a brooch that allows her to transform into a Sailor Guardian. After transforming, Usagi hears a plea from Naru. Naru's mother had been replaced by a monster named Morga who was using the jewelry family business to drain energy from those who bought them. Calling herself "Sailor Moon", Usagi confronts Morga. With encouragement from the tuxedo-wearing stranger, Usagi kills Morga using her Moon Tiara Boomerang. As Usagi sees off the stranger, who introduces himself as Tuxedo Mask, Jadeite watches over her actions.