When the narcissistic water god Ha-baek (Nam Joo-hyuk) visits earth in order to find three stones powerful enough to help him claim his throne, he seeks out the help of his servant and destined bride, psychiatrist So-ah (Shin Se-kyung), whose family is fated to serve the water god for generations. Things get stranger when the wind god, the water goddess, and the semi-god show up to complicate things…...