We follow Kody through four days of his astonishing life, moving each day to the house of a different wife. Hear how his family and relationships with his wives has changed since the move. Plus, we finally learn the sex of Robyn and Kody's baby.

The sisters open up about an issue that has bothered all of them -- their weight! Watch the sisters speak candidly about their battle with the bulge and see their attempts to the shed pounds as they they make their way to a gym for a body fat analysis.