In a monomyth, the hero begins in the ordinary world and receives a call to adventure that pulls them into an unknown world. This unknown world presents challenges and trials that the hero must overcome alone or with assistance. If the hero survives the challenges, they may achieve a great gift or "boon." The hero must then decide whether to return to their ordinary world with this boon. If they do return successfully, the boon can be used to improve their world. Many classic myths from around the world follow this basic structure of the hero's journey.