Summit

June 19: The Light call a summit with the Reach to discuss how their plans are advancing. As the tensions between the two groups begin to come to the fore, Ra's al Ghul notices the glamor charm on Tigress's neck and exposes her as Artemis, leading Deathstroke to execute both her and Kaldur. However, a hologram of Aqualad then plays which reveals to the Reach the extent of the Light's manipulations, leaving their alliance in tatters. Aqualad and Artemis suddenly rise, and as "Deathstroke" turns out to be Miss Martian in disguise, the Team and Kid Flash make their entrance, leading to an all-out battle. In the midst of the chaos, the Reach ambassador and the Brain are captured, while Aqualad defeats Black Manta and Black Beetle mortally wounds Ra's al Ghul. However, Ubu rescues Ra's (pledging that he will be revived), Black Beetle escapes with the Reach Scientist, and Vandal Savage summons Klarion to elude the Team. In the aftermath of the battle, Nightwing insists that Aqualad take over leadership of the Team, while Savage ousts the League from the War World by defeating Black Lightning, Black Canary and Captain Marvel; then uses it to flee into space. On Earth, the League present the public with proof of the Reach's duplicity, and Black Beetle assumes control of the alien fleet, swearing to destroy the Earth now that it is of no further use to them and before the Green Lantern Corps and Guardians of the Universe arrive.

Mark Desmond, Bruce Wayne/Batman, Arthur Curry/Aquaman, Dubbilex, Dick Grayson/Robin, Conner Kent/Superboy, Clark Kent/Superman, Kaldur'ahm/Aqualad, J'onn J'onzz/Martian Manhunter, Wally West/Kid Flash, Oliver Queen/Green Arrow, Blue Beetle, Beast Boy, Lagoon Boy, Wonder Girl, Bumblebee, Batgirl

Season two is retitled Young Justice: Invasion, and takes place five years after the events of the first season. This continues the story of the young heroes as the team (Aqualad, Kid Flash, Superboy, Miss Martian and Artemis)- now led by Nightwing- and its new members (Robin, Blue Beetle, Beast Boy, Lagoon Boy, Wonder Girl, Bumblebee, Batgirl) go deeper and more covert than ever before. As team rivalry and personal conflicts arise, the team must band together to fight the real threat that faces Earth.