In the premiere season, Resale Royalty gives a glimpse into a vintage haven, exposing one of the fashion industry's best kept secrets--an unassuming resale store with designer and vintage clothes and accessories nestled in a St. Louis strip mall. Sue is looking to expand her resale empire, but she can't do it without the help of her daughters, Diana and Laura. The mother-daughter trio work to bring designer brands at affordable prices to their fashion savvy clientele. However, their management styles seem to be at a whole different level--and working with family is never easy. From spectacular closet buys of posh St. Louis socialites to exclusive shopping tours across the country, this family has to learn the highs-and-lows associated with a demanding family business.