A ten years old Grete enters the pool in order to start swimming lessons. There she meets a nineteen years old Ariel, a professional swimmer, whose father is also her coach. Ariel is preparing for the upcoming Olympics but she is deeply worried about her leg pain. Despite the age difference, two become friends as Ariel helps Grete to overcome her fear of jumping into the water. However, Ariel's leg ache becomes more and more painful... It is a story about small and big fears, friendship, and passion for swimming, stronger than anything.
