Tomorrow Is Ours (2017)

The bay of Sète. A violent explosion. Among the chaos, a mother looks for her son. Was he aboard one of the boats that crashed into each other? Was he involved in what very quickly appears to be a murder? Determined to protect her child, her life is completely turned around when the body of a woman is discovered on the beach, that of her own sister, whom she hasn't seen in over fifteen years.