It's the dawn of a new age of heroes, and Metropolis has just met its first. But as Daily Planet intern Clark Kent working alongside reporter Lois Lane secretly wields his alien powers of flight, super-strength and x-ray vision in the battle for good, there's even greater trouble on the horizon.

The Justice Society of America, a group of heroes aiding the allies in World War 2, acquire an ally from the future who sends them on an adventure that changes history.

Inspired by the iconic mid-1990s DC story from Jeph Loeb and Tim Sale, Batman: The Long Halloween, Part One begins as a brutal murder on Halloween prompts Gotham's young vigilante, the Batman, to form a pact with the city's only two uncorrupt lawmen (Police Captain James Gordan and District Attorney Harvey Dent) in order to take down The Roman, head of the notorious and powerful Falcone Crime Family. But when more deaths occur on Thanksgiving and Christmas, it becomes clear that, instead of ordinary gang violence, they're also dealing with a serial killer - the identity of whom, with each conflicting clue, grows harder to discern. Few cases have ever tested the wits of the World's Greatest Detective like the mystery behind the Holiday Killer.

The killer known as Holiday continues to stalk the Falcone crime family while a new class of costumed criminal rises in Gotham City. Batman suspects that a former ally might be the serial killer.

Recently discharged Marine sniper John Stewart is at a crossroads in his life, one which is only complicated by receiving an extraterrestrial ring which grants him the powers of the Green Lantern of Earth.

Kara, devastated by the loss of Krypton, struggles to adjust to her new life on Earth. Superman mentors her. Meanwhile, she must contend with a mysterious group called the Dark Circle who searches for a powerful weapon held in the Academy's vault.

Warworld, a place of unending brutal gladiatorial combat, Batman, Superman, Wonder Woman and others must unite to form an unbeatable resistance to lead the entire planet to freedom.