Erin, Whitney, and Carlin have teamed up to start an online store selling casual, modest dresses. Starting a business from the ground up isn't easy, however, and it will take everything they have to not give up before they get started. Meanwhile, Kelly Jo takes Addee, Ellie, and Callie out for a fun girl's day at an adventure park. Later, the family throws Carlin and Evan an epic wedding shower that turns emotional when the bride-to-be gets sweet advice from her family and in-laws. And after spending a year renovating the church, the family joins together to celebrate the very first service in the beautiful new space.

As their wedding day gets closer and closer, Carlin and Evan get busy fixing up their future home. With all the unpacking, can they find the time to finish writing the duet they plan to sing at the ceremony, or will this turn into a musical disaster? Now that Michaella and Brandon have moved back to Tennessee, the eldest Bates daughter is anxious to settle into her new house. While the family helps her move in, Kelly Jo chats with Michaella about her nursing school plans. Meanwhile, Carlin, Whitney, and Erin have a photo shoot for their new dress business and many of the Bates try their hand at modeling. And later, our busy bride checks off one last remaining item on her wedding to-do list, as she and Evan head to the courthouse to get their marriage license!