Mombi, an evil witch, has returned to Emerald City, kidnapping the Oz adults, good witch Glinda and the Nome King! Now it's up to Dot, Neddie and the Oz Kids to save Oz from Mombi's dark powers.

Samantha believes that her father murdered her mother. In her exhausting search for the truth about her young mother's untimely death 14 years earlier, Samantha receives help from beyond the grave.