The Bates celebrate two joyous occasions in a special episode! First, Gil and Kelly Jo fly to Florida to see Alyssa and John and welcome their new granddaughter, Allie Jane, to the world. Then, a few days later, they're off to Washington, DC, where Brandon plans to propose to Michael using an elaborate scavenger hunt that will have her trekking all over the city!

Erin has been experiencing early contractions, so she and Chad rush to their doctor, to find out what's wrong. Meanwhile, Michael and Brandon discover how stressful it can be to plan a wedding long distance via video chat.

How do the Bates educate 19 kids on their own? Kelly Jo takes us inside her schoolroom and shows us the tricks to homeschooling so many children, all at different grade levels. Meanwhile, Tori continues her education at Crown College and Nathan takes to the skies in flight school.