When the Wizard invents a magical device called the Predictalizer that can predict with one hundred percent accuracy the day of every single citizen of Oz, Dorothy thinks things have become a little too predictable. Lion is fully onboard with life's scary uncertainties being gone until Wilhelmina is able to steal the device and use it for her own ends. The only way to stop her is by being so unpredictable even the Predictalizer can't predict it.