There is an elf world coexisting with human society. The water elves there lay eggs once a hundred years. The newly hatched eggs become elves to continue to protect the reproduction of human society. This time, the second prince Chakum was chosen as the guardian of the water elves, shouldering the dual fate of elves and humans. However, due to the historical errors of human society, Chakum was regarded as the possession of an ominous thing and was secretly hunted down by the royal family. The female bodyguard Barusa became his guardian and took the prince to make a living among the people to avoid being killed. As the day of the hatching of the water elf's eggs approaches, the fate of the prince becomes more and more critical. The earth elf egg eater in the elf world is looking for the guardian everywhere to tear him apart and eat him. Chakum and Barusa, who are only teenagers, have established a deep relationship and regard each other as relatives. How should they face the test of fate? Take responsibility and move forward bravely!