Sailor Moon S the Movie: Hearts in Ice

During their Christmas vacation, Usagi and her friends face an unexpected and severe snowstorm that signals the return of the Snow Queen Kaguya, who aims to take over Earth. Central to Kaguya's plan is a magical crystal from outer space, disguised as a comet approaching Earth. If Kaguya obtains the crystal, she will gain the ability to drain all life energy and freeze the planet in ice. Usagi, as Sailor Moon, must find the crystal before Kaguya does and use her powers, including the Legendary Ultimate Scout Power, to prevent Earth from being trapped in an endless winter.