A solitary oysterman in Panacea, Florida, haunted by his past and bound to the tides, finds his world upended when a mysterious woman arrives with secrets of her own - dragging him into a web of forbidden romance, coastal corruption, and a search for a missing heirloom that may never have existed. As they dredge the murky waters - both literal and emotional - Reid and Pearl begin to uncover not just a forgotten legacy, but a horrifying truth about what really happened to Reid's brother... and what still lies beneath the surface.