"Resale Royalty" is a workplace docuseries set in St. Louis that follows Sue McCarthy and her daughters, Diana and Laura, who own and operate one of the top resale stores in the country. This mother-daughter trio works to bring designer brands at affordable prices to their fashion-savvy clientele. With more than 25 years of experience in the resale business, Sue has big plans for the future, but she'll need her daughters to help manage the expanding empire. However, mixing family and business is never easy, as their differing personalities will put their business relationships to the test.