As Rhonda awaits her test results, her sister wives lend their support, and Rosemary's new ring opens a big wound for Robyn.
The family prepares to celebrate Valentine's Day, but the occasion is bittersweet for Paulie, whose oldest son is leaving for Africa.
The Williams clan answers viewers' queries, including questions on the stresses of life as a polygamist family and bedroom habits.
Brady, Paulie, Robyn, Rosemary, Nonie and Rhonda talk to Tamron Hall about everything that has happened on camera and behind the scenes.
Polygamist Brady shocks his wives when he proposes a change that will throw everyone's routines into chaos. Meanwhile, Karlie has a secret to reveal as she returns to Utah.
Brady attempts to heal his relationship with Robyn by arranging an anniversary `re-do' date. Meanwhile, Nonie worries about her difficulty getting pregnant.
As Independence Day arrives, the wives hope their extended families will accept the invitation to join the party and celebrate with them.
As Rhonda awaits the results of her mammogram, her sister wives plan a party to cheer her up, while Robyn illustrates a children's book inspired by her son's bullying.
Brady takes the family to visit his parents in Seattle, where grandpa leads the children on a hunt for Bigfoot, and grandma delves into issues with each wife.