There is this rare event in town. A girl, way to curious, goes and sees. But when she gets invited in, she is never to return. Just for one reason, and one reason alone... Her life has changed, drastically...

Lee Hyukjae, the merman of one of the most elite families in Mertown, has an obsession with holes, might it be the deepest hole in the ocean or his best friend, Donghae's ears. And he performs his weird experiments on the merman with blue tail. Donghae is just an angry merman who wants to kill his best friend a