In Egypt, Prof and Red destroy Tiko's stolen telescope, reunite with Rocky and Ace, and head to the 15th century to find Nostradamus and Tiko, but Tiko has already met the seer and gone.; The Challs find Tiko in the future, but all are arrested and submitted to the judgment of a machine, which dismisses all charges and sends them back to their own time (in one cube) for Tiko to face justice.; When a group of men dressed as ancient Greek soldiers attempts to steal a plane, one is captured. The Challengers are brought in to investigate and find that the captured soldier only wishes to return to the "Island of the Wizard." The soldier leads the Challs to this island where they meet Darius Tiko, who experiments with time travel. Confronted, the scientist disappears in a time cube but the Challs and the soldier follow in another cube, to track down Tiko and recover his stolen technology.; Having split up, Ace and Rocky are looking for Tiko and his stolen technology in ancient Greece where they are accused by an oracle of being messengers of ill omen. They run from the Greeks, find Tiko's stolen plane, and crash it near where they hope Prof and Red will return with their time cube.