Star Wars Episode V: The Empire Strikes Back (1980)

The Empire, led by Darth Vader, has launched a massive assault against the Rebel Alliance. Luke trains with Jedi Master Yoda to become a Jedi, while Han and Leia lead the rebellion’s forces against the Empire. The film climaxes with the revelation that Darth Vader is Luke’s father, and Luke’s hand is cut off in a duel with Vader.