To prove that humans have changed since the "dark times", Marnie invites Halloweentown teenagers to her school. When an evil knight shows up to destroy all things magical, Marnie must save her friends and her own magic.

For Troy, Gabriella, Chad, and Taylor, summer vacation is no day at the beach. Thanks to Troy, they are all working at a country club founded by Ryan and Sharpay's family. The club's annual talent show is right around the corner and Sharpay's competitive instincts are sizzling. She dumps Ryan as her singing partner and starts wooing Troy to join her onstage instead. Gabriella is not very happy that Tony agreed to sing with Sharpay, instead of her....

Now that "twin witches" Alex and Camryn know the truth about their royal birth, it's time for the girls to learn about each other and how to use their magical powers. While Alex wants to focus on college and having a semi-normal life, Camryn is all about the glamour, gowns and tiaras. But their dreams must be set aside when destiny calls again. A new evil threatens the people of Coventry, and the girls discover that their father, Aron, may still be...