Odik, who came to the south, lived easily - thoughtlessly, cloudless. But then one day he and his sister climbed onto a rock in the sea and could not get off it - they were removed by local boys. They were also simple and extraordinary boys: they knew how to dive deeply - and got some amazing things from the bottom; they knew how to protect friendship and honor - and found the way to the almost impregnable, sharp Dolphin Cape, covered with legends of the war...