In nineteen forty-four, young Eva Constance resides in an isolated coastal village drained of men by global conflict. Life appears routine until Eva notices the community's matriarchs gathering behind heavy iron basement bolts every Wednesday night under the pretense of prayer circles. When an escaped army deserter seeking shelter in their attic vanishes without a trace, Eva discovers damp salt trails leading beneath the floorboards.
Refusing to heed maternal warnings, Eva investigates the subterranean sea caverns connected to the town cellars, uncovering a terrifying generational covenant with an abyssal creature. The creature demands human sacrifices in exchange for coastal protection and bountiful nets. As the village women prepare their next ritual, Eva must choose between breaking the horrific ancestral pact or drowning in oceanic darkness.
