Green Arrow's niece, Artemis, joins Young Justice and must save a bright young scientist from the League of Shadows.

Red Arrow is on his own against the world's most dangerous assassins in preventing the League of Shadows from starting a war, until he is forced to make an unlikely alliance with someone even more dangerous. Aqualad fails to convince Red Arrow to ask the team for help.

The Team gets a new member and a new mission – a mission that may finally expose all the Team’s secrets... and all their lies!

While Superboy and Blue Beetle battle Intergang, Nightwing and company try to salvage the soul of a former comrade fallen from grace.

Oracle’s memories challenge Tigress’ decision to trust her new allies.