Carl de Keyzer, member of the prestigious Magnum agency, shares with us his doubts and questions as he carries out his major project “Before the Flood” on the rise of the sea and its effect on the coast. His professional wandering becomes almost metaphysical, with the threat of an invisible phenomenon is redoubled by the loneliness and family sacrifices that plague him. The omnipresent sea then becomes his personal "tartar desert", where he waits to capture the right image.