From the back cover:
Aliens have landed at Half-Mile Plateau. Fez's entire world is in danger. Half-price special on Sparrow Village sightseeing tours!
Fez, the Wizard of Time Travel, is a prisoner within an alien spacecraft. All three of his servants have betrayed him. Alone and trapped, he bravely fights for Time.
Set Fez free to save his world!
Fez V: Wizard's Betrayal includes user-friendly Player Characters from a technological world, including the Orbion from across the galaxy.