Luke Skywalker finds Yoda, a 900-year-old Jedi Master and begins the training to become a Jedi. Han Solo, Chewbacca, Princess Leia and C-3P0 are caught by the Empire and Solo is frozen in carbonite. In his Jedi training, Luke gets a vision that his friends are in danger and tries to help them. He has to confront Darth Vader, and the two of them fight. When Luke fights Vader, he cuts off Luke's hand and Luke also learns that Vader is his father. His hand is replaced with a prosthetic one, including nerves, muscles, and some other stuff.