Leopold is reading at home when something pulls him back in time to the island of Crete, outside the palace of King Minos. Before he can orient himself, a princess's crying draws his attention — a daughter of the Egyptian Pharaoh Akhenaten, imprisoned by Minos and scheduled to be fed to the creature below the palace. While Leopold speaks to her through her window, the king's guards arrive. Minos sentences him to the same fate: death by minotaur in the labyrinth. A guardian named Argo — a monster with many eyes whose riddle must be answered correctly to avoid a lethal energy jolt — is among the labyrinth's inhabitants. To rescue the princess Anckesenamon and defeat the Minotaur, Leopold must navigate an infinite network of doors and passages, some of which vary in size and position, and find the three symbols the prison's prophecy identifies as the only path to survival.