Under the Dome, a serialized drama based on Stephen King's bestselling novel, is the story of a small town that is suddenly and inexplicably sealed off from the rest of the world by an enormous transparent dome.
The town's inhabitants must deal with surviving the post-apocalyptic conditions while searching for answers about the dome, where it came from and if and when it will go away.
When the residents of Chester's Mill find themselves trapped under the massive transparent dome with no way out, they struggle to survive as resources rapidly dwindle and panic quickly escalates.
As the third season begins the residents of Chester's Mill appear both inside and outside the Dome following their mysterious encounter in the tunnels beneath the town.
As the Dome begins to reveal its ultimate agenda, the townspeople are forced to question what and whom they can trust as fresh threats appear, new residents emerge and surprising alliances form.
Marg Helgenberger guest stars as Christine Price, a Chester's Mill resident with insight into the Dome's origins. Eriq La Salle guest stars as Hektor Martin, the ruthless CEO of the energy company run by Barbie's father.
The series is produced by CBS Television Studios in association with Steven Spielberg's Amblin Television. Neal Baer, Stephen King, Justin Falvey, Darryl Frank, Stacey Snider, Jack Bender and Brian K. Vaughan, who wrote the television adaptation, serve as executive producers.