What was the objective of Star Wars

I'm going to assume that by "Star Wars" you mean the movies. Anyways, the underlying "objective"--the main point, if you will--is the power of redemption. Anakin Skywalker was long vaunted as "the Chosen One" who would "bring balance to the Force" by destroying the evil Sith. When he turned to the dark side, nearly all rejected that notion--after all, how could he destroy what he was a part of? Yet Luke Skywalker, wielding the power of good, managed to turn Vader back to the light; filled with remorse, the former minion of the dark killed his Master, Palpatine. The enraged Palpatine turned his anger on Vader, mortally wounding him, yet that didn't matter anymore. Vader was beyond caring. A small part of his soul, buried deep within layers of anger, hatred, and dark side energy, had been reawakened. So he died a Jedi, not a Sith; as Anakin Skywalker, not Darth Vader. The prophecy had been fulfilled.