<P> The show takes place in a post-apocalyptic future on a radically transformed Earth containing new species, some having arrived from space, many others the result of haphazard contamination by Votan terraforming technology which has transformed native flora and fauna in unforeseen ways . The story begins in the year 2046 . Earth has been radically transformed by terraforming, causing changes in topography, the extinction of plant and animal species, and the emergence of new species . The coastline of Antarctica became a Cancun styled tourist destination . The series follows Joshua Nolan (Grant Bowler) and his adopted Irathient daughter Irisa (Stephanie Leonidas), who have put down roots in Defiance, a city - state community where humans and several extraterrestrial races, collectively known as Votans, coexist over the partially re-built ruins of St. Louis . The show follows Nolan, his adopted alien daughter Irisa (Stephanie Leonidas), and the town's new mayor, Amanda Rosewater (Julie Benz) in addition to an ensemble of actors portraying different characters in the growing town . </P> <P> The series was broadcast in the United States on the cable channel Syfy and in various international markets . It premiered on April 15, 2013, in the United States and that same week in most countries that picked up the series . Defiance was renewed for a 13 episode third season on September 25, 2014, which premiered on June 12, 2015 . </P> <P> On October 16, 2015, the show was cancelled by Syfy citing financial reasons after having completed its third season . However, the companion video game continues to be supported; on March 1, 2016, Trion Worlds announced a major update for the game, promoted as season four of Defiance . </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2013) (Learn how and when to remove this template message) </Td> </Tr> </Table>

How many seasons of defiance will there be