It's baby Leighton's first Christmas and the Johnstons are going all out to make it special.

An average American family of little people proves size doesn't matter.

Trent and Amber tell the family about Trent's MRI results while Anna and Emma babysit Leighton for the first time and catch up about their dating lives.

The Johnstons celebrate Valentine's Day but with a baby in the house, things are looking a little different this year and Trent has his eyes checked as a potential cause of his vertigo.

Amber reaches a breaking point and goes to therapy. Liz and Brice head to a double date night out with friends. Trent thinks it's time to talk to his parents about their living arrangement.

Trent has a sexy surprise for Amber's birthday. Emma shops for her perfect senior prom dress. Then, Trent receives a shocking phone call and the Johnstons deal with the loss of a loved one.