Spaceballs

On the peaceful planet Druidia, Princess Vespa flees an arranged marriage, prompting the evil Dark Helmet and President Skroob to kidnap her in a plot to steal Druidia’s atmosphere.
Mercenary Lone Starr and his half-man, half-dog sidekick Barf race to rescue her, while dodging loan shark Pizza the Hutt and learning the mystical power of The Schwartz from the wise Yogurt.