The story of Lotte and Hans Hass is not only that of two pioneers of underwater photography, but also that of a great love that began 60 years ago. The film takes us back to their Red Sea expedition: it is Lotte's debut as an underwater photographer – and the beginning of her love story with Hans. As Lotte carves out a career for herself, the couple become celebrities and open the eyes of the world to the fascination of the sea. A visually and emotionally moving portrayal of a true-life adventure!