On a brutal yet scientifically advanced world called Zargon, the main preoccupation is subjecting other planets to their will. Prince Egan is the son of the violent Sovereign Olad, who despairs of his pacifist views and wonders how Zargon will survive in his young son's hands when he is dead. Arkan, Chief Commander of all Zargon's military forces, also shares the Sovereign's concerns. After the accidental death of Olad, Egan is proclaimed Sovereign, who then seeks to extend the hand of friendship to Zargon's satellite planet Salenia. Arkan then tries to destroy Egan's plans using underhanded methods.