The people of Eureka are being kidnapped and replaced by body-doubles one by one unless Allison, Fargo and Zane can figure out how to avoid capture and save their town.

Beverly Barlowe resurfaces in Eureka seeking Carter’s help to free the Astraeus crew, and the rescue plan lands Carter in the crew’s virtual world.

The town huddles in a last attempt to locate the vanished Astraeus before it’s too late!

The Astraeus crew returns to Eureka four years later and must adapt to a myriad of changes, including a more oppressive version of Deputy Andy.