Kai, is the daughter of a human and a sea nymph, but she doesn't know that she is anything supernatural. Kai was sold to monsters at a young age, when she was only 12 years old. Kai is now 26 years old, and very abused by her captures. When Sam and Dean Winchester find a case on the said monsters, they kill the monsters after finding Kai hidden in the attic of the abandoned house. Kai was terrified of them, but they slowly got her to trust them. After a few months, Dean Winchester falls in love with Kai and that starts a whole new world for the captured nymph hybrid. How will Kai evolve into the human she's meant to be? How will she handle falling in love with a man who rescued her?