Merfolk are hunted to extinction and pirates rule the seas. Kuroko is a mermen that has never changed, instead living in hiding as a human with his uncle. The ocean calls to him but his fear of it is strong after it claimed the life of his parents. After a mistake Kuroko finds himself on the run and somehow in the hands of the most ruthless pirate crew to sail the seas. Stuck between the hunters, the Merfolk, his fear of the sea and his ever growing feelings of attraction towards the captain how will he survive and what kind of life will he choose?