VIDEO: First Look - All-New Trailer for Syfy's New Series DEFIANCE

They arrived. The earth changed. Syfy's DEFIANCE premieres April 15, at 9/8c. Below, check out an all-new trailer for the series!

About DEFIANCE:

In April of 2013, Syfy will present a revolution in storytelling: Defiance," an Epic drama that will unfold as both an original series and a multi-platform video game. An unprecedented collaboration between Syfy and Trion Worlds, "Defiance" is the first-ever convergence of television and online gaming, featuring an interconnected world between the two mediums as they evolve together into one overall story.

The series' luminous cast includes Grant Bowler, Julie Benz, Stephanie Leonidas, Tony Curran, Jaime Murray, Graham Greene and Mia Kirshner.

Set in the near future, "Defiance" introduces an exotically transformed planet Earth, its landscapes permanently altered following the sudden - and tumultuous - arrival of seven unique alien races. In this somewhat unknown and unpredictable landscape, the richly diverse, newly-formed civilization of humans and aliens must learn to co-exist peacefully. Each week, viewers will follow an immersive character drama set in the boom-town of Defiance, which sits atop the ruins of St. Louis, MO, while in the game, players will experience the new frontier of the San Francisco Bay area.

The series is executive produced by Kevin Murphy ("Desperate Housewives," "Caprica," "Hellcats"), who also serves as showrunner, Michael Taylor ("Battlestar Galactica") and Rockne O'Bannon ("Farscape"). Scott Stewart ("Legion," "Priest") directed the pilot; Michael Nankin will serve as supervising producer/director on the series. "Defiance" is produced by Universal Cable Productions.