Yoon So Ah is a no-nonsense neuropsychiatrist who also manages her own practice, which comes with a significant amount of financial responsibility. Since her ancestors, her family has been charged with the responsibility of rendering service to Ha Baek, a reincarnated water god, and So Ah feels compelled to do the same. Ha Baek starts to develop affections for So Ah, but he has competition for her heart from Hoo Ye, the CEO of a resort firm. Hoo Ye initially has a conflict with So Ah over a piece of land, but he later falls in love with her. Ha Baek and Hoo Ye have a tumultuous relationship. Is it possible for a mortal woman and a god to have a successful romantic relationship?