Crushing hard on his neighbor a couple doors down, Yongguk finds himself in front of her door in a drunken haze one evening.  Luna officially meets Yongguk in this rather questionable state and is kind enough to help him out before she gets him back to his apartment, no worse off than he already was. Typical boy meets girl... boy falls for girl... and they live happily ever after tale?  Not if Luna's boyfriend has anything to say about it.