Calvin Penney is a big hearted but stubborn fisherman living in a small Newfoundland town, who's still haunted by his father's mysterious death from decades ago. When an unidentified sea creature begins terrorizing his hometown, Calvin must fight to hold his close-knit community together. Determined to keep his son Wade and the rest of his family safe, he teams up with a visiting marine researcher to confront the creature and reveal the island's buried secrets before it's too late. Blending local myth, thrilling suspense, and heartfelt humor, this twisty six-part limited series dives into themes of family, community, and change - both terrifying and inevitable.