It is a surreal 24-hour love story about the four-dimensional innocent girl Jung Saet Byeol, who was formerly a troublemaker, and the adorkable loving male shop manager Choi Dae Hyun, set against the backdrop of a convenience store. They met by chance four years ago, when Saet Byeol requested Dae Hyun to get smokes for them. Saet Byeol arrives at Dae Hyun's convenience shop in search of a part-time employment, and thus begins their humorous romantic journey.