Elizabeth receives a distress signal and Phillip tries to work out what the consequences of their last operation will be for his family. Meanwhile, Nina and Stan both see opportunities when a the Rezidentura gets an unexpected visitor.moreless
Elizabeth and Phillip find they have not only put themselves and their network at risk, but also their family, when a routine mission goes awry. Meanwhile, Nina starts to change her relationship with Stan and Paige becomes more suspicious of her parents.moreless
A news crew comes to create a story about the group. Meanwhile, the girls go shopping and the truth about the robbery is coming closer to being discovered by the authorities.
The workers at Gold Star all have dreams. Matt could move out of his mother's house along with his pregnant girlfriend and child. Nicky could pay of a debt and seek a crush. Samira could go to the school that she has always wanted to go to. Denise can rebuild her crumbling marriage. Leanne will attempt to keep her past hidden. Bob could buy Gold Star. Antonio could give his family a new life. When they win the lottery, they seem lucky, but it just unveils a new set of obstacles.moreless
As Big Jim continues to secure his power and takes steps to eliminate Barbie, the Monarch is crowned and the Dome sends a familiar face to Joe and Norrie to reveal the secret of the Dome.moreless
While Big Jim convinces the townspeople to hunt Barbie down for his alleged crimes, Joe and Norrie move the mini-Dome
Big Jim frames Barbie for the deaths of his enemies, while Junior abandons the group and they discover the consequences when a storm gathers.
Julie learns about Peter's past, while Junior gets a promotion. Meanwhile, Maxine forces Barbie to fight in a staged arena contest.
Big Jim receives an unexpected visitor from his past, one with connections to another person trapped beneath the Dome. Meanwhile, Joe and Norrie find the source of the Dome in Joe's barn, and Barbie and Linda encounter someone with a connection Chester Mill's drug dealer.moreless
Ollie takes control of the town's water supply and Big Jim must join forces with Barbie and Linda to get it back before his own control of Chester's Mill is threatened.
While Harriet goes into labor, Joe and Norrie investigate the source of the Dome in an attempt to save themselves and their fellow townspeople.
The second Mass' victory is short lived when they discover that the Volm plan on shipping them all off to camps in Brazil.
When the townspeople realize that their food and water are running out, they begin looting Chester's Mill for whatever remaining supplies that they can find.
Tom returns safely back to the camp, angry about the death of Lexi and Anne. He comforts his sons and instructs them to use their pain for strength in avenging their deaths. Lourdes continues to sabotage the camp, but has she pushed her luck too far?moreless
Barbie receives word from the outside that the government is drawing their men back as the Dome interferes with magnetic fields.
Tom wakes up in a pre-invasion world.
When Chester's Mill is stricken by a meningitis outbreak, the townspeople panic when the clinic runs out of medicine and the Dome prevents anyone from bringing in new vaccine. Meanwhile, Julia learns the secret that Peter was hiding from her, and Junior is left in charge.moreless
The Picket family rob the Masons as they search for Anne and Alexis leading to a stand-off for their supplies.
Joe ends up holding a party at his home where the town's teenagers gather to enjoy one of the few generators in town after the power goes out. Meanwhile, Barbie and Big Jim search for Paul after he escapes custody, and Junior looks for a way out of Chester's Mill.moreless
The Masons are in for trouble when Hal 's intentions come to the surface.
As the reality of their situation settles in, the townspeople's tempers start to fray. Meanwhile, Big Jim sends Reverend Coggins to remove the evidence from Duke's house, and Junior stalks Barbie.
Marina disobeys orders, Weaver searches for two missing 2nd Mass members and after a mission goes pear shaped, Tom and Pope finds themselves relying on each other to survive.
The townspeople of Chester's Mill discover themselves unexpectedly cut off from the outside world when an invisible dome springs up around the town, sealing them in... with limited food, water, air, and medicine.moreless
Another alien attack is thwarted resulting in a meeting between Tom and a powerful leader.
The mole is still at the front of everyone's minds, especially when they come under sniper fire from a young girl. Anne continues to worry about her baby.
Taking place several months after the end of last season's final episode, the 2nd Mass attempt to liberate children who are being forced to work a mine, guarded by skitters and mechs.
Arthur Manchester investigates a mole in the ranks, and the Volm seek assistance in destroying a power source for Espheni weapons.
Elizabeth and Phillip meet with the eponymous colonel, even though they suspect a trap. Meanwhile at the FBI, Stan's draws ever closed to his neighbors' true identities.
While Stan unexpectedly appears to be getting closer to a Directorate S cell, Phillip and Elizabeth worry about being caught in a sting when they are ordered to meet with a new important source.moreless
A personal situation in Moscow causes Elizabeth to embark on a mission which puts the couple in danger from both the FBI and the KGB.