With the due date near, Jinger and Jeremy get ready to meet baby Vuolo; John whisks Abbie away on a surprise trip to ask for her hand in marriage; Jinger's labor takes an unexpected turn.
The hills are alive for Josiah and Lauren as they go on their Austrian honeymoon; while there, they re-enact scenes from ``The Sound of Music'' and visit with a local family; Jinger worries she won't have the smooth labor she was hoping for.
Jinger and Jeremy get a dose of reality as they adjust to life as new parents; Ben tutors the Duggar kids, and they must use their math skills to cook a meal for forty people; and later at dinner, one couple makes a special announcement.
Jessa, Lauren, Kendra and Jana pair off with some of the little kids and go head to head to create a groom's cake for John and Abbie's wedding; Josiah and Lauren's worlds are shaken up when they reveal some tragic news.
In Laredo, Jeremy is on daddy duty as Jinger runs errands. Meanwhile, John & Abbie's wedding is just around the corner! John and the boys partake in a thrilling competition while Abbie tries on wedding dresses. Will Abbie be able to find "the one?"
John David & Abbie fly to the Philippines for a mission trip weeks before their wedding. Meanwhile, Jinger & Jeremy travel up north so Felicity can meet her great-grandparents. While there, they get a surprise from some very unexpected guests!
John and Abbie's wedding is finally here and everyone is in full wedding-mode as they get ready for the big day. At the altar, the bride and groom share their first kiss in an unexpected way. Later, a family member has a very special announcement!