Épisode 1

Abigail, an oceanologist, is sent by IFREMER on a mission to Fécamp, which she left a few years earlier following a personal tragedy. She must investigate the inexplicable sinking of the Rose Davies, one of her father's trawlers with 14 sailors on board. While she is conducting her research to find the wreck with the gendarme Prigent, mysterious phenomena occur at sea.