From the visionary producers of Batman: The Animated Series comes all-new stories in this seminal animated world. In this opening chapter, S.T.A.R. Labs in Gotham City is attacked by a giant robot that steals an entire room from the laboratory. Who’s controlling the robot? How will Batman stop the mechanized menace? And what does it all have to do with Lex Luthor’s sudden appearance in Gotham?

Who is Hank Henshaw? What made him the Cyborg Superman, and what does he hope the Sinestro Corp can give him? Alan Burnett (SUPERMAN/BATMAN, Batman: The Animated Series) peels away the mysterious layers of the mechanical monster as the new JLA Watchtower's defenses are put to the test against him and the Sinestro Corps!

Taking place before the events of the video game "Batman: Arkham Asylum", Batman returns the Joker and other villians including Scarecrow to Arkham.

The Joker tries to refill his depleted bank account by offering to kill Superman for Lex Luthor for the price of a cool one billion dollars. Naturally, Batman follows him to Metropolis, leading to the first official meeting of Batman and Superman in the DC Animated Universe.