Summer days are here again, and longtime comic book fans know what that means: it’s event time! DC Comics has had a long tradition of setting up universe-sweeping events that often have long term effects on the heroes and villains that are part of them.
This summer marks the start of a huge event with Lex Luthor at the forefront called the Year of the Villain. Part of that far-reaching storyline is helmed by Brian Michael Bendis and the Superman story he’s been setting up in Action Comics all year, Event Leviathan. Someone is taking out all the clandestine organizations in Metropolis and beyond, and no one knows who or why. Rumors swirl that “Leviathan” is behind the attacks, and they’re just getting started.
Source: IGN.com What You Need to Know Before DC's Event Leviathan