It's August in Chattanooga, Tennessee and moonshiner Hattie Hayes has collaborated with a nearby vineyard to serve her moonshine at a Wine and 'Shine event. Not only is this an opportunity for Hattie to gain more moonshine fans, but she's also excited to hear the Bootlegging Brothers, a popular bluegrass band. But not every attendee is looking for harmony. When one of the brothers disappears and is presumed dead, Hattie realizes her grace note gathering...

When a train convention attendee dies after drinking her moonshine, Moonshine Shack owner Hattie Hayes sets out to clear her name and find the killer.