In the 31st Century, famous explorer and pilot Ulysses sets out on a journey to return to Earth and his wife, accompanied by his son Telemachus, a new robot gift named Nono, and his crew on the space-ship Odyssey. However, their trip is disrupted when Telemachus is kidnapped by a cult that worships a massive robot named the Cyclops. Ulysses destroys the Cyclops and rescues his son, but their actions enrage the ancient gods of Olympus, who put the crew into a deep sleep and erase the location of Earth from their memories. The Odyssey is transported to the universe of Olympus, and the only way to escape is for Ulysses to find the Kingdom of Hades. Along the way, they must defend against the forces of the gods and other dangers in a desperate search for a cure and a way home.
On his way back to Earth from Troy, Ulysses happens upon a mysterious unchart...