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 trying to cross the sea in the most precarious of vessels, fleeing from armed conflicts and other miseries in their home countries. What shocked them the most, though, was that many countries have ordered their Coast Guards not to rescue these refugees, but to let them drown. Oscar and Gerard fight to do the job none of the authorities are doing and provide support to the thousands of people who so badly need it. For all involved, this first trip will turn into an odyssey, one that will change their lives forever.