Molly Gray, now Head Maid and Special Events Manager at the Regency Grand Hotel, is weeks away from marrying her fiance Juan Manuel when a television crew arrives to film an antiques appraisal show. An heirloom from Molly's late Gran turns out to be a priceless treasure - and then vanishes in a daring heist. To solve the theft, Molly must turn to a long-hidden diary that reveals Gran's own secret history and a love story stretching back decades.