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

When Mount Justice itself is attacked, can Artemis and Robin (the two teens without super-powers) save the Team (or even themselves) from the unknown invaders?

Wally West comes oh-so-close to fulfilling his birthday wish to finally fight alongside the Justice League. Instead, a massively disappointed Kid Flash is taken off the mission and tasked with a simple delivery job. But a few deadly surprises await the birthday boy along the way.

The Team goes undercover at the Haly International Traveling Circus to locate a thief stealing weapons technology across Europe. But a thief isn’t all they find…

Black Manta sends Kaldur on a mission that will prove where his loyalties truly lie.

A conqueror from another world becomes a wild card in an intergalactic game of supremacy -- placing planet Earth square in the jackpot.