"Welcome to Republic City" is the first episode of the Nickelodeon series The Legend of Korra. The series premiered online on March 24, 2012 and on Nickelodeon on April 14, 2012, as a sequel to the original series, Avatar: The Last Airbender. The setting of the second series has changed dramatically from the first series. Most events take place in a city known as Republic City, which is a "steampunk" style city. Most notably, the access to electricity in the new series substantiates the passing of time between the two series.