[1] It was written by Nicole Jamet and Marie-Anne Le Pezennec, and broadcast for the first time between 13 June and 18 July 2005 on TF1.

[2] The story is set in Ty Kern, an island off the coast of Brittany (which is, in real life, Belle-Île-en-Mer).

In Ty Kern, four families are connected by ancient rivalries and secrets: the Kersaints, the Le Bihans, the Pérecs, and the Kermeurs.

Marie Kermeur, a young police lieutenant, returns to the island to marry her childhood love, Christian Bréhat.

The bloody corpse of a seagull is brought in by the tide, Marie is assaulted by strange nightmares during the night, her brother Gildas is found dead, and menhirs near the town begin to ooze blood.