3x1 - Justice League

The League expands their operations, enlisting new recruits across the globe. The newest of these is Green Arrow, who has repeatedly refused to respond to invitations to join the League. He is therefore pulled to the rebuilt, and much larger, Watchtower by teleport. Opting against joining, he hitches a ride back to Earth with the team of Green Lantern, Captain Atom and Supergirl, who have been sent on a mission to stop a giant, uncontrolled, nuclear-powered defense robot in an unnamed Asian country existing in self-imposed international isolation.