At the border of Marseilles, the Berre lagoon is one of the largest saltwater lagoons in Europe. From an ecological perspective, this place is a melting pot of all our planet’s problems and contradictions. Both a wildlife reserve and an example of nature’s destruction by man, it has been the subject of ecological study for a decade, making it the most studied lagoon on the Mediterranean coast.

This film follows and documents the restoration work of the Berre, meeting those for whom the lagoon is an indispensable part of daily life: fishermen, people who live alongside it and industrial workers, but also scientists dedicated to monitoring and rehabilitating this endangered ecosystem.