Under the Dome is an American science fiction television series that premiered on CBS on June 24, 2013, and ran for three seasons, concluding on September 10, 2015. The series is based on the novel of the same name by Stephen King and was developed by Brian K. Vaughan. The show takes place in the fictional town of Chester’s Mill, Maine, where a mysterious dome suddenly appears, cutting off the town from the rest of the world.