The Black Unicorn

Ben Holiday, High Lord of the Magic Kingdom, finds he has been tricked by the wizard Meeks into leaving Landover. When he returns he finds Meeks has cast a spell to assume Ben's appearance and Ben now looks like a dirty vagrant to all but his greatest enemies. Even worse, Meeks now has the medallion that gives the King power to summon the mysterious knight-protector, the Paladin. There is only the prism cat, whatever that might be, that can help Ben now.