TV Article 'The Legend of Korra's' fourth season will debut in October. By Jonathon Dornbush Published on September 11, 2014 08:30PM EDT Photo: Nickelodeon The Legend of Korra wrapped its third season only a few weeks ago, but the wait for the next season (or “book,” rather) is probably shorter than you expected. Book Four of The Legend of Korra, which will complete the show’s original order of 52 episodes, debuts on Nick.com and the Nick app on Friday, Oct. 4. Korra creators Michael Dante DiMartino and Bryan Konietzko announced the date for new season, which will be titled “Balance,” in a video on Nickelodeon’s website. They also announced that the fourth episode (or Chapter Four) is titled “The Calling.” New episodes will debut each Friday on Nickelodeon’s website, which became the series’ home late in season three. As ratings waned for the show on television, Nick made the decision to continue the show only online, which will be the norm for all of season four.