Mizu is literally a fish out of water, a Ningyo stranded on land after a curse traps her in a human form. Now, with a voice badly damaged, she has three months to convince the human who's life she saved to kiss her in order to break the curse and regain her true form. The problem is that he has no idea who she is, or that she saved him. Will she manage to break the curse? And if she does, will she be able to peacefully return home, or will her heart be broken?