Autumn 2015. Two Spanish lifeguards, Oscar and Gerard, travel to the Greek island of Lesbos after seeing the heart-wrenching photograph of a little boy drowned in the Mediterranean Sea. They arrive to discover a shocking reality: thousands of people risking their lives every day by trying to cross the sea in the most precarious of vessels, fleeing from armed conflicts and other miseries in their home countries. But the thing that stands out most is that no one is doing any rescue work.