Years later, Anakin became an teenager and still under tillage from Obi-Wan. He felled in love with Padme, but forbidden love is an emotion that a Jedi shouldn't have. He is still fearful because his nightmares torment him internally and he is emotionally messed up. He became vulnerable to the dark side seductions. Now that he became a man, the Chancillor persuaded him to choose the darkside which has greater power. He finally gave in to the darkside and all hell turned loose. He betrayed the Jedi, his mentor and killed his own wife when she became pregnant with Luke and Leia inside her. He became Darth Vader, the demon he swore to destroy. When Vader fought Obi- Wan in the first round, Obi-Won won and left him to die.
Vader fought Obi-Wan in the second round on the Death Star. This time Vader got the upper hand and send his master back to the force. Vader sets his sight to his son this time, he wanted him to follow the same path he took to the darkside, to become an dark Jedi just like him. The first time he tried to was on Cloud City when he fought his son for the first time. During that time Luke almost gave in, but he thought better of it when Obi-Wan and Yoda warned him about it. Vader also chopped off his son's hand during that time. At the last round on the second death star, Luke chopped his father's hand. Like father, like son. Luke can sense that Anakin is still alive inside that costume. He saved his life when the Emperor turned on Luke and Vader picked him up over the shaft. Both Vader and Anakin died, this time he went to the force just like Obi-Wan and Yoda did. His spirit lives on forever.