The Sailor Warriors discover the portal to the Dark Kingdom and are traveling down the tunnel when Kunzite confronts them. During the fight, the girls are transported to a ruined Kingdom. Queen Serenity appears before Sailor Moon and explains the sad history of the once-great Silver Millennium kingdom. In order to save her daughter, Queen Serenity sent her spirit (along with the other Sailor Warriors and Endymion) to the future Earth with no memory of their former selves. Meanwhile, the cats find the entrance to the Dark Kingdom and are attacked by Kunzite. The Sailor Warriors come to their aid, and after a fierce fight, Sailor Moon manages to kill Kunzite.