"Long straight hair, a white dress, his first love—these three words linger faintly in Baek-gu's mind as he promptly passes out. When a mysterious woman appears at his doorstep amidst a pouring rainstorm, Baek-gu is shocked to his core. Not because she faintly reminds him of someone he knew long, long ago, but because he mistakes her for a ghost. With their relationship already starting off on an awkward foot, the question looms: what will become of the story between these two?"