Luke's quest to become a Jedi Knight is the main plot of Star Wars Episodes IV-VI.
indeed, all of the epic battles and cosmic events going on around him are in a sense only the backdrop before Luke's inner struggles are played out. When we first meet luke on Tatooine, he is a callow youth, dreaming of adventure.
The classic image from A New Hope, in which Luke stands looking out at the horizon as the Twin suns of his home planet are setting, captures perfectly this romantic, dreaming quality of his character. Early in A New Hope, we also see the reckless, impetuous side of Luke's character as he races off after R2 without his uncle and as he soils on the Sandpeople, Luke almost got himself killed, thanks to his immaturity. But, Luke is also motivated by a strong sense of duty and a desire to be a part of something larger than himself. In the person of Ben Kenobi, Luke finds this desire answered, as Ben offers to help Luke become a Jedi Knight.
Through Ben, Luke gets the opportunity to travel, to help the Rebel Alliance against the Empire, to feel closer to the father he never knew, and to grow as a person through contact with the Force. Ben ends up becoming like a father to Luke. But then Ben is later killed by Darth Vader. And the truth of Luke's real father devastates him. And was Disappointed in Ben for hiding the truth from him. Luke now must learn how to become his own man, And save his father's soul.
