Love is a Battlefield – The Resistance try to free loved ones from Christine’s influence before she finishes her plan. Barbie risks it all to free Eva and Hektor enlists Big Jim and Julia to a test cure for infected citizens. Also: Joe works with Christine after she shares shocking news about the being that created the Dome.
Plan B – Big Jim and Julia devise plans to end Christine’s control over the town by initiating a life-or-death plot involving Barbie and Eva, while Joe and Norrie conduct research to better understand the Dome’s ultimate agenda. Meanwhile, Hunter finds more information about the true head of Aktaion, the nefarious private corporation that wants to harness the Dome’s energy.
Ejecta – As the world outside the Dome is rocked by a catastrophic meteor shower, unexpected alliances form inside the barrier. Eva tries to indoctrinate Barbie deeper into The Kinship and Big Jim and Julia turn to one another while isolated on Bird Island outside of town. Also, Joe is forced to accept help from Sam, the man who killed his sister.
Go Now – Season 2 ends with the discovery of a potential exit from the Dome, just as the citizens trapped in Chester’s Mill face imminent danger.
Turn – A new threat from the Dome puts the residents of Chester’s Mill at risk of being crushed to death. Meanwhile, Melanie’s health continues to deteriorate as the fate of the egg remains unknown.
Black Ice – Sam and Rebecca try to save the residents of Chester’s Mill when the temperatures plummet inside the Dome. Meanwhile, Barbie risks his life to save Julia after an accident.
The Fall – Big Jim finally learns the shocking truth about what really happened to his wife, Pauline, when they are reunited. Meanwhile, climate change poses a new threat to Chester’s Mill.
The Red Door – When Barbie is apprehended by a group of mysterious men, he is relentlessly interrogated about his connection to the Dome. Meanwhile, Big Jim makes a deal that could seal the fate of the residents of Chester’s Mill forever.
Awakening – When Barbie enlists his father’s help to reach out to Julia, he realizes that Don may know more about the Dome than he is letting on. Meanwhile, Big Jim appoints himself sheriff of Chester’s Mill.