The series follows the lives of teenaged heroes and sidekicks who are members of a fictional covert operation group called The Team. The Team is essentially a young counterpart to the famous adult team, the Justice League.[5][6] The main setting is the fictional universe previously designated Earth-16,[5] during a time period in which superheroes are a relatively recent phenomenon.[7] The series debuted with an hour-long special on November 26, 2010 with the airing of the first two episodes, "Independence Day" and "Fireworks".[8][9][10] Young Justice premiered on September 9, 2011 on Teletoon, in Canada.[11] The series ended alongside fellow DC Nation show Green Lantern: The Animated Series after its second season came to an abrupt conclusion during spring 2013.