Erin invites her siblings over for a sleepover to help ease the transition from a full house to living with only her new husband, Chad. Zach and Whitney get real about becoming parents. Michaella wants to surprise visit her beau, Brandon, in Texas, but will it go against the family's strict rules of courtship?

The younger kids get a lesson on "Train Up," Gil and Kelly's method for discipline, and take 11 of them shopping for the ultimate test! Erin takes a trip to the doctor hoping for some good news.