As a baby, Lum was cursed by a witch left off the guest list at her naming celebration: she would never find happiness with her true love. Years later an amusement park opens in Tomobiki, and during a magic show there Ataru Moroboshi is turned into a pink hippopotamus. Lum chases the magician responsible through the park's hall of mirrors, where a portal opens and carries her off to another dimension, and Tomobiki quietly begins rearranging itself around her absence.