Star Wars is one of the most popular, profitable, and entertaining movies of all time. It advanced special-effects technology to a degree unseen before, with computerized and digitally-timed effects. The film helped resurrect the financial viability of the science fiction genre, a category of films that was considered frivolous and unprofitable. This mythological tale of space-age heroism follows an idealistic young boy, Luke Skywalker, who becomes trained in the righteous ways of the Force in order to rescue the captured Princess Leia from the Death Star and the dark forces of the Empire, led by Darth Vader.