"Rock of Ages" is an upcoming episode. It will be the series' first 30 minute episode as well as the Season 3 finale. It was originally scheduled to premiere Thursday, January 22, 2015 on Nick Jr., but it had been removed from the schedule because, according to Aurelie Charbonnier, the episode's animation has to go through final retakes. However, the episode has already apparently aired in Poland on March 31 and in Bulgaria on April 22. It later premiered on Nickelodeon Jr. Spain on June 6, Nickelodeon Korea on June 12, the United Kingdom on June 17. Series creator Ben Bocquelet has said "Rock of Ages" will finally air in the United States in September 2015 (see note below).