As Halloweentown prepares to celebrate its 1,000th anniversary, Marnie Piper and her brother Dylan return to Witch University, where trouble is in session from the Sinister Sisters and from someone who's plotting to use Marnie's powers for evil.

Troy, the popular captain of the basketball team, and Gabriella, the brainy and beautiful member of the academic club, break all the rules of East High society when they secretly audition for the leads in the school's musical. As they reach for the stars and follow their dreams, everyone learns about acceptance, teamwork, and being yourself.

Welcome to the dark underworld of Hollywood's Golden Age where monsters really do exist.