Ever since thirteen-year-old Coop and his mother moved to the small town of Windy Bottom, Georgia after his father died, he has fallen in love with the small town and its kooky residents. When the local city park is renovated, a skeleton is unearthed and revealed to be that of Coop's grandmother. Coop's grandfather thought she left him, but it now appears she was murdered. Coop is determined to get to the bottom of the mystery, even if it means revealing that his grandfather is the culprit.