Bill wants to throw a party to celebrate Don's plans of getting a fourth wife but Nicki's massive credit card debt weighs heavily on his mind. Pam's friend attempts to make his moves on Margie, but she is preoccupied with wanting to know more of how she became a part of the Henrickson family.

Bill takes Margene to a convention. Frank is looking for a new wife. Meanwhile, Nicki throws a party.

The Henricksons' holiday cheer is tested by family revelations. Alby's purification of Juniper Creek leads to a defection.

Bill finds success in the Senate but finds new roadblocks set up by the Mormon church. Barb comes to a new conclusion about her life. Cara Lynn's adoption faces a new obstacle. Lois recalls her past with Frank.

Bill gets a new home security system, Nicki throws a birthday party, new neighbours move in, and Margene meets her mother-in-law. Meanwhile, there's a break-in in Bill's hardware store.

Bill considers running an expensive advertising campaign, Barb finds out about Nicki's secret, and Margie goes to church with Pam, their neighbor. Meanwhile, Sarah brings home a surprise guest, and Ben goes on a trip with his friends.

Margene's mother visits the family. Scott has upsetting news about Alby. Meanwhile, a familiar face returns to Juniper Creek.

Bill seeks his wives' advice regarding the video poker business. Barb tries to reconcile things between Sarah and Heather. Meanwhile, Lois seeks revenge on Frank.

Barb finds out that her mother is about to re-marry. Bill hears disturbing news about Weber Gaming. Meanwhile, Nicki is upset by outside influences on her children.

After being elected state senator, Bill Henrikson announces that he is a polygamist, and he and his families are attacked from every side; Alby Grant returns from living in the desert with the idea of purifying the compound and getting revenge.

Bill goes on a hunting trip with his son Ben, Barb tries to get accredited as a full-time teacher, and shopaholic Nicki realizes she can't pay her credit card bills. Meanwhile, Sarah goes to a house party but ends up needing her friend Heather's help.

Bill and Roman's disagreements result in lawsuits from both sides as well as unwanted houseguests from the compound. Sarah learns about her family's history from her grandmother and Joey confides in Barb.

Nicki goes back to the compound for a family reunion, bringing Bill with her, where they find out the extent of Roman's betrayal of their family. Barb is annoyed by Margene and Ben's behavior. Meanwhile, Alby disobeys his father.

Bill and Roman butt heads when Rhonda disappears from the compound. The prosecutor offers Joey a plea bargain in exchange for a confession. Meanwhile, Sarah takes an interest in a boy from her support group.

In the season finale, the family prepares for the annual Pioneer Week. Bill and Alby butt heads over the control of UEB. Meanwhile, Margene reveals the truth to Ana.

The Henricksons embark on a 2,500-mile road-trip pilgrimage to a Joseph Smith shrine in Cumorah, NY, where Bill intends to bury a family time capsule in the sacred earth. Along the way, a series of jarring revelations test the limits of their family bonds--and Bill's faith.

Bill convinces Ray Henry to go along with his idea to rescue a kidnapping victim; Nicki has a surprise visitor; Alby hatches a deadly plot to consolidate his power; Sarah makes a surprise announcement that shocks the family.

After revealing his polygamy to the world the newly elected Bill goes even further out on a limb by calling publicly for more polygamists to come into the open while Barb talks Nancy, her mother, into attending a mother-daughter symposium.

Bill fights for his right to be sworn in as senator; Barb, Nicki, and Margene struggle with personal revelations and changed public profiles.

Bill petitions the DA's office to charge Roman with murder; Margene starts a jewelry business; Don's fact-finding mission about the casino license reveals the possible involvement of Bill's brother-in-law; Sarah considers her options for the future.

Bill and Don investigate who's responsible for ruining one of the Home Plus advertising signs. Alby gets the police to look into the poisoning case. Meanwhile, Nicki is mad at Bill for his forgetting their anniversary.

Bill attempts to sign the deal on the video poker devices before Roman. Joey and Wanda are having a rough patch and Joey wants Barb to help them. Meanwhile, Nicki's upset with the Catholic summer school Wayne is attending. Finally, Bill is captivated by a pretty waitress.

Margene plots to introduce Barb and Nicki to Bill's next potential wife. Meanwhile, journalists take an interest in Rhonda's story.

Nicki's problems escalate at home and on the job; Alby's wife Glory reacts to her reduced stature at Juniper Creek by showing a secret document to Bill; Joey's plans to make Kathy his second wife could be derailed by Roman and Hollis Greene.

Nicki's homecoming, after a visit from her sister wives, isn't what she imagined; Barb endures a trying experience at her old church; Ted does an about-face on the casino project; Scott's reunion with Sarah doesn't go over well with her father or brother; Joey is upset by Bill's change of heart about Roman after the Greenes' latest move.