An invisible and mysterious force field descends upon a small fictional town of Chester's Mill, Maine, USA, trapping residents inside, cut off from the rest of civilization. The trapped townsfolk must discover the secrets and purpose of the "dome" and its origins, while coming to learn more than they ever knew about each other.
No way in. No way out.
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Did You Know?
The silver wedding band that Big Jim (Dean Norris) wears in the last 15 episodes was bought in an auction that CBS had by a fan of the show. See more
James 'Big Jim' Rennie
[Opening Narration, Season 3
Four weeks ago, an invisible dome crashed down on Chester's Mill, cutting us off from the rest of the world. The dome has tested our limits, forcing each of us to confront our own personal demons... rage... grief... fear. Now, in order to survive, we must battle our most dangerous adversary... the enemy within.