A Mediterranean island is rocked by a lack of fishing and a series of suspicious deaths. Strangely, these events coincide with the arrival of a stranger on the island, Théa (Laetitia Casta), discovered in the hold of a boat belonging to some missing fishermen. Chloé (Noée Abita), whose state of mind is already fragile, is thrown into even greater confusion by this encounter.
A mini-series from Arte that revisits the myth of mermaids in a fantasy creation that is both pictorial and romantic.