As Bill prepares for the opening of a new addition to his hardware store chain, he receives bad news about his father's health, and also deals with trying to balance the needs of his three wives.
While Bill seeks protection against the religious compound led by Roman Grant, things heat up between the sister-wives over Margene's overtly sexual behavior. Roman "The Prophet" asks Bill's father to act as a go-between to deliver a message to his son, and the Hendricksons get together for a family dinner with Bill's business partner and his three wives. Meanwhile, Margene pressures Bill about buying her a car and Ben goes out on a date with a girl that seems too mature for him.
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 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.
Nicki suspects that Bill is having an affair and is considering bringing a fourth wife to the family. Margene, feeling alone in the big house, befriends the new neighbor, Pam Martin. Bill goes after Roman and tries to expose him, but polygamy accusations also fly in the Home Plus. Meanwhile, Ben is trying to cope with his arousing sexuality and being a teenager.
Bill attends the funeral of Frank's first wife Roberta at Juniper Creek, and strikes a deal with Roman. With Roberta out of the picture, Bill's mother Lois attempts to rise up on the social ladder at the compound, and Barb and Nicki find themselves in a hairy situation at Henrickson Home Plus.
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.
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.
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.
The Henrickson's prepare Teenie's baptism with friction and surprises from Barb's judgmental sister. Bill decides to take preemptive action against Roman with his brother. Margene continues to butt heads with Nicki, and her misfortunes pile up. Ben wants to show his affection to Brynn but is surprised when she demands something more.
Both Bill and Barb get social recognition as Barb is selected as a finalist for a "Mother of the Year" award and Bill is asked to become a member of the Salt Lake City Leadership League. Meanwhile, the sister-wives draw up their wills, and Rhonda gets to know what life outside the compound is like for teenage girls when she hangs out with Sarah and Heather.
To Roman's surprise, Bill and Joey attend the UEB priesthood council meeting. Alby's visit to Wanda brings out her old habits, which could potentially land Bill in a big trouble. Rhonda uses the acting competition as an excuse to leave the compound but she discovers that her family isn't willing to let her go. Finally, Barb attends the Mother of the Year awards ceremony but not all goes as expected.
After they're outed as polygamists, Barb decides to leave the family while Bill starts an investigation of who leaked the information. Meanwhile, Sarah attends a support group for ex-Mormons
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.
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.
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.
Margene's mother visits the family. Scott has upsetting news about Alby. Meanwhile, a familiar face returns to Juniper Creek.
Bill is stressed out by work, and Frank tries to get a hold of Lois' money. Meanwhile, the family discovers Ben and Brynn's secret.
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.
Bill takes Margene to a convention. Frank is looking for a new wife. Meanwhile, Nicki throws a party.
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.
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.
Bill tries to attract partners for his casino business plan. Barb considers the possibility of a fourth wife, Ana. Meanwhile, the neighborhood arranges a big block party -- but the Henricksons are not invited.
The family continues to date Ana and tries to decide when and who should give birth to the next child. Meanwhile, Bill gets an answer about the casino, and Barb gets an answer from her doctor. Sarah has a bump in the road on her way to an out-of-state school, and Don is forced into monogamy.
The family finds out Ana's been keeping secrets from them. Margene gets upsetting news about her estranged mother. Nicki, working at the DA's office, finds out the identity of the last witness against Roman. Barb's sister is back in town and her actions might put Bill's casino plans in jeopardy. Sarah changes her mind about the senior prom and takes Heather, Ben, and Franky with her -- upsetting Rhonda.
Both Bill and Adaleen try to further their agenda with Rhonda. Lois is on the run and comes to Bill for help. Barb discovers that they are financially on a very shaky ground. Sarah is looking for people who can help with her problem. Bill makes a proposition to Alby. Ana meets two of her to-be mother-in-laws. Finally, Roman's case goes on trial with the verdict hinging on two sisters' testimony.
Ana gives her answer to the family's proposal. Bill gets entangled with a collector who is trying to get a hold of an historical document Alby is selling. Roman invites his children to a meeting at the motel. The teens take the car and head for a road trip to the compound. Nicki quits her job at the DA's office.
The entire family heads east on a pilgrimage to Cumorah, New York, the location of an Joseph Smith shrine.
The Henricksons try to deal with the repercussions of the revelations made on the road trip. Alby's wife Laura makes arrangements to improve her status at the compound. Joey plans to marry Kathy but the idea doesn't sit well with all people. Nicki spends time with her boss. Margie receives help from neighbor Pam.
With funeral preparations underway, Bill pressures the DA to charge Roman with murder. Meanwhile, Bill's casino plans are in jeopardy once again, now by some tribal feud. Wanda gets a visit from her brother. Margie starts her own business. Nicki comes clean to her boss.
Bill refuses to ask Nicki to come back home. Barb is in trouble with the church. Nicki runs into a man from the past. Ted tries to squeeze Bill for a share in the casino business but runs into trouble with the Greenes.
Disagreements between Bill and Nicki come to a head. Bill and Roman Grant must work together to retrieve Ted's kidnapped daughter. Margie gets an opportunity to pursue a TV career. Sarah plans a future with Scott. After hearing the news that Roman is free to return to the compound, Alby and his wife Laura take drastic measures to not give up their positions.
In the fourth season premiere, the Henricksons plan to open their Indian reservation casino. Elsewhere, the FBI launches an investigation to find Roman Grant and Nikki tries to keep her daughter away from J.J.
Bill considers running for Utah State Senate, but Nicki, Margene and Barb all have different feelings about it. Meanwhile, Sara and Scott decide that they will get married, but not sealed under the church.
Bill heads to Washington, D.C. to obtain support for his run for Utah State Senate but ends up on opposing side of a lobbyist. Elsewhere, Alby deals with his father's legacy all the while becoming attached to Dale.
An audit of Home Plus brings a few surprises and threatens Bill's potential political career. JJ wants a policy change at Juniper Creek and Bill finds out something revealing about Margene and Ben.
Bill continues to work on his campaign as Nicki throws herself into helping out. Bill worries Coburn as he wants to take down Bill. Frank pays a visit to the reservation.
Episode Clip
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Bill wants more exposure for the casino. Ben and Jodean are further involved in Lois and Frank's bird enterprise. Ana shows back up at the Henricksons with some startling news.
Bill and Joey head to Mexico to rescue Lois and Frank. Margene tries to stop Ana from leaving the country. Barb and Tommy come across a surprising event at the casino.
Bill worries about Marilyn's plan that might jeopardize his political career. Barb draws the wrong kind of attention at an all-ladies event. Sarah's plans for the future shocks her family.