It's 2046, and over 30 years have passed since aliens arrived, changing life on Earth forever. In the frontier town of Defiance, a drifter-turned-lawkeeper and the newly-appointed mayor attempt to lead the human and alien residents through the prejudices and politics that threaten the fragile peace they've fought for.

Radio astronomers discover a mysterious signal in the deep sea that could be contact with extraterrestrials. After several terrifying manifestations threaten their beliefs, the team must fight to survive the ultimate evil.

An alien touring the galaxy breaks away from her group and meets two young inhabitants of the most dangerous place in the universe, the London suburb of Croydon.

In Arizona in 1873, a stranger leads a posse of cowboys, outlaws and Apache warriors against an alien enemy.

Twentieth century history as we know it is a lie. Aliens have been among us since the 1940s, but a government cover-up has prevented the public from knowing this. Follow John Loengard and Kim Sayers as they attempt to thwart numerous plans of the alien Hive, most of which are tied to historical events and figures. The pair must stay one step ahead of a covert government agency, Majestic-12, tasked with fighting the aliens while maintaining the conspiracy...

In this continuation of the beloved '80s film series, a young townie must protect the kids she's babysitting from an invasion of Crites, tiny, insatiable, carnivorous aliens, who've returned to capture a runaway royal of the species. Who will survive? And who will be eaten?

Nolan and Irisa return to the ruins of Defiance seven months after the complete destruction of New York City. They find the town on the verge of war with the Votanis Collective, led by the notorious General Rahm Tak. To beat impossible odds and to save Defiance from the brutality of the Votanis Collective, the town turns to the mysterious Omec, a long-lost race of Votans with a blood-stained past.

The Tardis arrives on a extinct volcanic island. Before long, the travelers are captured and taken into the depths of the Earth, where they find a hidden civilization, the lost city of Atlantis. The Atlanteans worship a goddess named Amdo and use Fish People, men and women operated upon so that they can breathe under the sea, to farm the plankton-based food on which they survive.

A young woman discovers the remains of an ancient human civilization and a spacecraft that takes her to the Moon to confront a dangerous mystery, guarded by a race of robotic creatures that now threaten the Earth.

Created by Emmy Award winner Mike McMahan, Season Three challenges the U.S.S. Cerritos ensigns in (hilarious) ways they could never imagine, starting with a shocking resolution for Season Two2s epic cliffhanger finale.