Set in a distant future, Heroic Age tells the story of the quest of the human race to find the messianic individual that holds the power to save mankind. This savior, named Age, is the only human to have been raised by the Golden Tribe before they departed from the universe. The young princess of the humans, Dhianeila, and the crew of the Argonaut - an advanced spaceship able to travel between stars via lanes called Starways - find Age on the ruined planet Oron. After fending off an attack from a rival tribe, the Bronze Tribe, the human race sets off on a journey of salvation, led by Dhianeila and Age.