Amid a miserable life working as a cleaner, Su-a happens to help Seojun, the CEO of Tae-il Corporation, and spends an unexpected one night with him. After two months of wandering around searching for Su-a, Seojun finds her pregnant with his child. When Su-a gets into trouble due to her threatening ex-husband, Seojun and his mother show up to save her at the right moment.
