Season 4

In the season premiere, the Johnstons celebrate Jonah and Liz's birthdays with a big bash, where they meet Liz's "friend" James, but it's also Liz's last hurrah before she has leg surgery.

Liz begins the tough road to recovery from her leg surgery; Amber tries to improve her real estate game with some help from Anna and Alex.

After yoga fails to inspire the family to get active, Amber and Trent get bikes for everyone, but Emma and Alex struggle without training wheels; Trent and Amber surprise the family with matching tattoos, but Jonah's not feeling them.

Amber signs the family up for a charity bike ride; Liz takes her first steps out of her wheelchair, but pushes herself too far in trying to ride her new bike; Alex and Emma head to the orthodontist for braces.

Trent teaches Anna how to drive to prepare for her license, but her behavior leaves Trent and Amber unsure of whether to trust her with the responsibility of driving; Trent and Amber shock the kids with a big announcement.