For years, Bill Henrickson wished for a world free from the corrupt 'prophet' of Juniper Creek, Roman Grant. Now that it appears he's gotten his wish, Bill and his ever-growing family can finally breathe easy...or can they? HBO presents Season Four of this iconic drama series that tells the continuing story of this polygamist businessman (played by Bill Paxton) who lives in suburban Salt Lake City with his three wives (Jeanne Tripplehorn, Chloe Sevigny, Ginnifer Goodwin) and now-nine children.
Bill is building his new church with his family and (what's left of) Don's, while the Henricksons prepare for the casino opening. Their casino partners, Jerry Flute and his son Tommy, are not pleased that they are under scrutiny by the Feds because of their business relationship with Bill - apparently he's not "the sunny face of polygamy" after all. Bill insists he's clean (and goes to Ray at the DA's office to demand he back off his investigation of his family.) When he tries to go over his head to State Senator Hayes, Bill learns Hayes died suddenly.
Even though Nicki is not alone in her certainty that he's destined to be the next prophet at Juniper Creek, Bill mulls a run for a vacant seat in Utah's state senate. Meanwhile, Sarah risks alienating her family with a crucial decision about her future; Alby isn't ready to take "no" for an answer from Dale, and Joey and Wanda return to the compound.
Bill takes Nicki and Cara Lynn to Washington, D.C., where he seeks support from a congressman (Perry King), but gets off on the wrong foot with a heavyweight lobbyist (Sissy Spacek). Meanwhile, Alby wrestles with his father's legacy while growing ever fonder of Dale, and Barb and Sarah conduct sensitivity-training seminars at the casino.
When an audit uncovers insurance discrepancies at Home Plus, Bill takes drastic steps to protect his secrets and save his candidacy. J.J. approaches Alby with a partial solution on how to dispose of a "flock cast adrift," flummoxing Nicki. Lois, Frank and Jodean (Mireille Enos) encounter a border scare in their quest for exotic birds. Sarah gets a taste of motherhood, albeit with someone else’s child. Alby is tormented by his inner Roman, and torn by what he sees as Dale’s betrayal. Troubled by Tancy’s (Bella Thorne) surprising revelation about Margene and Ben, Bill decides that a change of scene might be best for his firstborn son. Written by Melanie Marnich; directed by Dan Attias.
Bill (Bill Paxton) pulls out all the stops in his efforts to win Paley’s (Perry King) support for the state senate nomination, while Nicki (Chloë Sevigny) relishes her role as his campaign’s "secret weapon." Marilyn (Sissy Spacek) makes a pitch to represent the casino’s interests in Washington, but encounters resistance from Tommy (Adam Beach). Frank (Bruce Dern) picks an inopportune moment to drop by the casino with Lois (Grace Zabriskie) and Jodean (Mireille Enos). Bill absorbs a last-minute sucker punch from Colburn (Tom Amandes), but turns the tide by embracing the Lost Boy in himself. Written by Seth Greenland; directed by David Petrarca.
Ana (Branka Katic) resurfaces with a surprise revelation that shakes up the family. Bill tries to get Tommy and Jerry (Robert Beltran) to rebrand the casino and expand its advertising into Idaho. Lois and Frank take Ben (Douglas Smith) and Jodean south of the border to visit Don Dona (Mel Rodriguez), a bird vendor, at their collective peril. Margene (Ginnifer Goodwin) worries about the impact of Bill’s future outing on her booming business. With a flourish, Bill shows his wives the family’s collective future. Written by Coleman Herbert; directed by Dan Attias.
With a revenge-minded Joey (Shawn Doyle) in tow, Bill makes an emergency trip to Mexico after Lois and Frank’s latest smuggling escapade backfires. Nicki is jolted by a doctor’s news, but even more flummoxed by Adaleen’s (Mary Kay Place) shocking revelation. Margene offers up a novel remedy to keep Ana from leaving the country with her fiancé. After a scare at the casino, Barb (Jeanne Tripplehorn) and Tommy look for culprits – and find some disturbing answers. Written by Julia Cho; directed by David Petrarca.
Sarah (Amanda Seyfried) shakes up the family with an announcement, while Nicki makes an all-out attempt to be the woman Bill wants her to be. Margene is put on the defensive when Bill questions her real reasons for getting married. An ill-timed remark at a ladies-only event puts Barb in an unwanted spotlight. Marilyn looks to bring down Bill as his campaign winds down. Barb jolts Nicki with news about Joey that Bill was supposed to deliver. A suspicious Bill looks for clues about J.J. (Zeljko Ivanek) in Kansas, while Adaleen finds them closer to home. Written by Patricia Breen; directed by David Knoller.
In the Season 4 finale, the impending state-senate election gives Bill and Marilyn a chance for last-minute shenanigans, though news of a scandal in Kansas forces the Henricksons to reconsider a post-election plan to come clean about their polygamy. Meanwhile, Jerry and Tommy find a new threat at the casino; and Margene ponders her relationship with Ana.