Ostend 2021. Lena (12) wins a sailing competition at sea. She is congratulated by her father. Father and daughter are thick as thieves. One night, Jacky’s fishing boat crashes. Lena’s mother Christine, brother Jules and sister Fran are deeply affected. The cause of the accident is unknown but people whisper that it was Jacky’s fault. He should not have set sail in such heavy weather. At the ash scattering at sea, the funeral boat is hit by wave. Lena sees a huge shadow slide out from under the boat. She thinks they were hit by a large animal but no one believes her. No one saw the shadow.