His personal circumstances and larger causes become intertwined. The final confrontation is where the hero must face their greatest fear. In star wars, Luke duels with Darth Vader. In the Matrix, Neo faces Agent Smith in the subway station. In the Wizard of Oz, Dorothy faces the Wicked Witch.
Adventures lead to a great confrontation between good and evil.
We each discover that we can survive ordeals we did not think we could survive.