"The Adventures of Rel Rel: Lost Mirror" is the story of a girl, her goggles, and the world beyond her imagination. Relene, or Rel Rel as she likes to call herself, is a thirteen-year-old girl with an active imagination. Neglected by her parents, she learns to create worlds in her head, to keep from being lonely. She carries a stuffed doll named Lily, that she brings wherever she goes. It's her only friend.

When she uses an old pair of goggles, the worlds in her head appear to become reality! Lily comes to life, and she happens upon a mirror that can grant any wish. Along with her doll companion, Rel Rel sets out to see if the mirror can truly grant the one thing she always wanted.