Ben and his wife Jules are in for a surprise when they inherit an abandoned coastal property that Ben's recently deceased mother never told them about. Untouched for ④0 years the house looms like an eerie relic over land which includes a stunning private cove and beach. The beauty and tranquility of the place leave the family with the nagging question why was this property kept a secret for so long While Jules rummages through the house looking for answers, Ben goes to repair the buried water tank, not knowing that in doing so he is unleashing a long-dormant creature, fiercely protective of its environment.