The series is filmed in Lutherville, Maryland, where it chronicles the activities at Robbie's First Base, a family businessoperated byRobbie Davis, Sr. and his son, Robbie Davis, Jr.. Assisting them is Robbie Reier, who's very knowledgeable in sports history; and Lewis "Sweet Lou" Brown, a longtime employee who's not too bright. The show features various sports memorabilia experts from around the United States who make appearances on the showto letthe guys at the shop know whether the items they are being offered are real or fake and what the actual value of these historic treasures are worth. Noted experts such as Richard Albersheim of Albersheim's and Troy Kinunen of MEARS are amongst the noted experts who help them out.