Tensions fly when the Browns hit the road for their Spring Break trip along historic Route 66.

Kody is frustrated about his role in the decision making process of the family. Do the wives agree that he is not in charge?

The Brown family from TLC's "Sister Wives" give their opinions on the best parts of a polygamist marriage.

Maddie explains her dating do's and don'ts and why polygamy is not in her future.

The Browns from TLC's "Sister Wives" share their thoughts on their kids following the polygamist lifestyle.

The Browns from TLC's "Sister Wives" talk about the similarities and differences between monogamist and polygamist marriages.

The Browns reach the last stop on their road trip, as they meet the Richards, a Christian polygamist family.

The "Sister Wives" and Kody share their thoughts on how to make a polygamist marriage work.

Sometimes when you're in a rush it's easy to lose track of the children. This goes for any parents. With so many kids Cody says he sometimes has take take a note from the farming handbook and count the kids like cattle.

Christine's daughter Mykelti brings a boyfriend home.

The wives explain the definition of plural monogamy. They prefer to be more of a cohesive family unit. While it does take work, they are willing to commit to a life together.

The Browns get a scare when Truely falls ill.

Mariah has a special memory of Kody's dad Winn who passed away recently.

Kody's first wife Meri tells him she's going back to college now that their daughter is away at school.

The Browns go to San Francisco, and the sister wives do some shopping.

During the ceremony several of the children get choked up when saying what they are thankful for, many of them have learned valuable lessons from their parents.

Savanah has a loose tooth and only trusts one person to help her get it out.

Kody is frustrated about his role in the decision making process of the family. Do the wives agree that he is not in charge?

Kody and Caleb's bromance is going strong and pretty darn cute.

The Brown's worry what Tony's family will think of their lifestyle.

The family considers having another baby.

When Tony asks Kody for Mykelti’s hand in marriage, there is some disagreement in the timing of wedding.

Kody and Robyn talk about the difficulties they faced blending their families together over the past year and a half.

Robyn and Kody recall the days when they were first dating, and Kody tells us that there was actually one thing that made him think twice before marrying Robyn.

Kody and Christine talk in depth about the dimensions of their love, and her family history of polygamy.

Christine and Kody turn an anniversary trip to Galveston, Texas, into intensive couples therapy in an effort to improve their relationship.

Meri and Kody open up about their courtship, including the first time Kody held her hand. You'll never believe who was the one who "just wanted to be friends" when it all started!

Kody and Janelle talk openly about the challenges of their marriage, including her conversion to his faith.

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Christine confesses to Robyn the intense jealousy she felt after Robyn joined the family.

The wives prepare for a jewelry expo to promote their new business. Will they have enough stock to get through the expo?

Aspyn is weighing her options for a career path with some help from a family friend.