Katie's turning twenty and celebrating her special day with her boyfriend, Travis. But how is the young couple navigating their relationship in the age of COVID? Is there an engagement in their future? Meanwhile, The Bates Sisters' Boutique decides to purchase a storefront and are figuring out plans to renovate the space! Later, Katie, Travis, Gil, Kelly Jo, Lawson, Isaiah and some of the younger kids head to the Smoky Mountains for some outdoor birthday fun, but will a gem mining adventure reveal a surprise proposal?