The miniseries is a reimagining and continuation of the classic story The Wonderful Wizard of Oz, with science fiction and additional fantasy elements added. It focuses on the adventures of a small-town waitress named DG who is pulled into a magical realm called the O.Z., ruled by the tyrannical sorceress Azkadellia. Together with her companions Glitch, Raw, and Cain, DG journeys to uncover her lost memories, find her true parents, and foil Azkadellia's plot to trap the O.Z. in eternal darkness.
DG (Zooey Deschanel) is a small-town waitress who feels that she does not fit into her Kansas farm life and has visions of a lavender-eyed woman (Anna Galvin) warning her that a storm is coming. Her visions are realized when the sorceress Azkadellia (Kathleen Robertson), tyrannical ruler of the O.Z. (Outer Zone), sends her Longcoat soldiers through a travel storm to kill DG. Escaping into the travel storm, DG finds herself in the O.Z. where she meets Glitch (Alan Cumming), who had half of his brain removed by Azkadellia, and Wyatt Cain (Neal McDonough), a former law enforcer, or "Tin Man", who had been locked in an iron suit for years as punishment for opposing Azkadellia's rule. The trio next encounters a "viewer" named Raw (Raoul Trujillo). DG receives a magical symbol on her palm and learns that her Kansan parents are androids and that her real mother is the lavender-eyed woman of her visions. Visiting the Mystic Man (Richard Dreyfuss) in Central City and then the Northern Island, the group learns that Glitch was once the advisor to the Queen of the O.Z. and that DG and Azkadellia are both sisters and the Queen's daughters...