With the three eldest sisters out of the house, the remaining girls decide it's time to redecorate their bedroom. And Zach and Whitney are doing a little redecorating of their own as they head out to shop for a new couch to spruce up their home. Later the girls test out a new recipe for dinner.

Whitney's expecting! She and Zach have their first ultrasound to check on the baby. Gil and Kelly Jo have shared 19 kids and 28 years together, so the happy couple celebrates their wedding anniversary with a romantic dinner and talk of new things to come. Nathan calls a family meeting to share some exciting news!