Air date: 2014-06-30

Runtime: 42 min

Barbie's life is in Big Jim's hands; the dome becomes magnetized; Julia tries to save the life of a mysterious girl who may have clues about the origin of the dome.

Air date: 2014-07-07

Runtime: 39 min

When Rebecca discovers an infestation of butterfly eggs on the crops, Barbie risks his life to help her save the town's food supply.

Air date: 2014-07-14

Runtime: 39 min

Big Jim conducts a census to see how long the town can survive on dwindling resources; acid rain threatens everyone.

Air date: 2014-07-21

Runtime: 38 min

Rebecca and Big Jim consider extreme measures as the conditions worsen in Chester's Mill; clues about Melanie's connection to the dome are revealed.

Air date: 2014-07-28

Runtime: 42 min

After Big Jim and Rebecca's plan left the town divided, Julia takes over as the leader of Chester's Mill; Norrie and Joe help Melanie find more clues.

Air date: 2014-08-04

Runtime: 39 min

A cave-in severs Barbie and Sam's path back to Chester's Mill during their investigation of a mysterious tunnel; a dust storm rages through the town, as Big Jim and Julia face off in a power struggle.

Air date: 2014-08-11

Runtime: 40 min

As Barbie descends further into the mysterious tunnel in hope of finding Sam, he comes across a world filled with unanswered questions.

Air date: 2014-08-18

Runtime: 39 min

Barbie turns to his father for help contacting Julia but realizes that he may not be trustworthy; Big Jim declares himself sheriff of Chester's Mill.

Air date: 2014-08-25

Runtime: 42 min

Barbie is apprehended by mysterious men and relentlessly interrogated about the Dome; Big Jim forms a deal that could permanently seal the fate of the Chester's Mill residents.

Air date: 2014-09-01

Runtime: 42 min

Big Jim finally learns what happened to his wife, Pauline; Chester's Mill faces a new threat -- climate change.

Air date: 2014-09-08

Runtime: 42 min

Rebecca and Sam try to save Chester's Mill residents as temperatures plunge; Barbie puts his life at risk to help Julia after a terrible accident.

Air date: 2014-09-15

Runtime: 40 min

The latest threat intensifies, leaving Chester's Mill residents at risk of being crushed to death; Melanie's health declines as the egg's fate remains uncertain.

Air date: 2014-09-22

Runtime: 40 min

Just as the walls start to close in on those trapped in Chester's Mill, a possible exit from the dome is revealed.