The love keeps growing in the Bates Family! Newly engaged Josie is planning her fall wedding, Tori and Bobby are expecting their first child, happily married couple Zach and Whitney are renewing their vows, and Carlin's still head over heels for Evan! Meanwhile, Gil and Kelly Jo spend some time with Tori and Bobby in Nashville and experience a 4D ultrasound for Baby Kade. And unbeknownst to Carlin, Evan meets up with Gil and Kelly Jo for dinner to ask for her hand in marriage, but is Gil ready to let go another one of his daughters? And later, it's a joyous and emotional time for Whitney and Zach, when her parents and the Bates family join together for their vow renewal.

Now that Evan's picked out an engagement ring for Carlin, there's one more big thing on his to do list, figuring out a proposal plan! He meets up with Erin and Kelly Jo to brainstorm ideas on where he should pop the question to his true love! Meanwhile, Josie and Kelton have settled on an outdoor space for their wedding. But will pending rain put a damper in planning the perfect ceremony? Last, Erin and Chad stop by Zach and Whitney's house, after learning that Whitney had a miscarriage. Together the couple's offer one another support, and help plant a tree in memory of the baby.