One day, typical South Korean high school student Haein visits a swimming pool, is sucked into a mysterious whirlpool, and loses consciousness. When she comes to, she finds herself deep inside the ocean. And she meets Ellime, who declares he is actually her father... Haein learns that she was born from the Spirit King and her half-elf mother. Can she survive the world that she has been thrust into? (Source: Copin Communications)