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.

An inside look at this special and intimate Brown family moment.

Mariah gathers Kody and the Sister Wives together to reveal a secret she’s kept for her entire life.

When the wives turn their focus on Kody, they also reveal some secrets about themselves.

All four wives turn their focus on Kody and reveal some of his biggest secrets.

All four wives turn their focus on Kody and reveal some of his biggest secrets.

Meri and Janelle resolve their Thanksgiving miscommunication.

The whole Brown family is preparing for an epic trip to Hawaii, but Robyn is nervous about travelling with a newborn.

Logan discusses his views on polygamy.

Maddie lays down the rules of her upcoming wedding.

The Browns makes the most of some down time and go surfing.

Mykelti sits down with Christine and to discuss the status of her relationship and future plans.

Christine has some strong words for her daughters quick engagement.

Meri discusses her feelings about being catfished.

Mariah sits down and discusse's how she felt about her mom's catfishing experience.

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

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