Get ready for a new kind of hero. Ralph, the villain in the "Fix-it Felix" arcade game, decides to become a hero.
When Litwak's Family Fun Center & Amusement arcade closes at night, the various video game characters leave their normal in-game roles and socialize in a power strip. Wreck-It Ralph, the antagonist of the game ''Fix-It Felix Jr.'', is ostracized by its other characters for being the game's villain, while the titular hero Felix is praised and awarded medals. After the game's inhabitants exclude Ralph from their thirtieth anniversary party, he sets out to earn a medal for himself to gain his neighbors' respect. Felix worries that Ralph has "gone Turbo" – a term coined when notorious Racing video game character Turbo attempted to take over ''RoadBlasters'' out of jealousy, which resulted in both of their games being unplugged.
Video game bad guy Ralph teams up with Vanellope von Schweetz and together they must risk it all by entering the world wide web in search of a replacement part, in the hopes of salvaging Vanellope’s video game.