Young Justice Season 1, Episodes 1 to 12, Recap, WARNING SPOILERS!

The series follows the lives of teenage superheroes and sidekicks, namely Nightwing, Kid Flash, Aqualad, Superboy, Miss Martian, and Artemis, who are members of a fictional covert operation group. Within the show, "the Team" is a group of young heroes attached to the famous adult team, the Justice League, but operating outside of the bureaucracy that constrains the more established superhero team. The main setting is a fictional universe apart from the previous DCAU and other continuities, designated at one point as Earth-16,  during a time period in which superheroes are a relatively recent phenomenon, and supervillains have all began working in tandem in a grand conspiracy on behalf of a cabal of key villains known as the Light.

The series debuted with an hour-long special on November 26, 2010. Young Justice premiered on September 9, 2011, on Teletoon in Canada. After airing its second season, subtitled Invasion, the series was canceled in early 2013. In November 2016, Warner Bros. Animation announced that the series would be returning for a third season, subtitled Outsiders, which premiered on January 4, 2019, on DC Universe. In July 2019, DC Universe renewed the series for a fourth season, later subtitled Phantoms and eventually moved to HBO Max. The fourth season premiered on October 16, 2021, and ended its complete season run on June 9, 2022. The series was cancelled once again in August 2022, as part of Warner Bros. Discovery streaming reorganization

Sidekicks Robin, Aqualad, Kid Flash, and Speedy are finally ready to join the Justice League as full-fledged members. However, they soon discover that are to be treated as "junior members." An enraged Speedy leaves, while the other three strike out on their own to investigate a mysterious fire at Cadmus Laboratories. The trio soon discovers that Cadmus conceals a major conspiracy, and one of its goals is to create a clone of Superman for their own ends. Kid Flash, Robin, and Aqualad are captured by the Cadmus genomorph forces, which prepare to clone them and dispose of the originals. Their only hope is the Superman clone, "Superboy", who must choose between freedom and subservience to those who created him...