Following a series of unexplained crimes, a father is reunited with his son who has been missing for ten years.

Summer 1910. Several tourists have vanished while relaxing on the beautiful beaches of the Channel Coast. Infamous inspectors Machin and Malfoy soon gather that the epicenter of these mysterious disappearances must be Slack Bay, a unique site where the Slack river and the sea join only at high tide.

Dan returns home to find his wife is missing. With no signs of struggle or break-in and with no help from the police, Dan's search for answers leads him down a psychosexual rabbit hole.

For thirty years, French-Algerian sisters Zorah, Nohra, and Djamila have been living in the hope of finding their brother Rheda, abducted by their father, and hidden in newly decolonized Algeria. Their relationship is shaken when Zorah, the eldest sister, decides to write a play based on the traumatizing events of their childhood that haunted them their whole life. But when they learn that their father is dying, the three sisters decide to go to Algeria...