A month before his arranged marriage to the eldest son of a chaebol family, a man spends one night with his fiancé's half-brother. He wants to write it off as a mistake, but the younger brother shows him a photo of the two of them and offers a deal: "Break off the wedding, and I'll tell you what my brother is hiding." The deeper he digs into his fiancé, the more traces of missing ex-lovers surface. And in the photo of the last one to vanish, the half-brother is there too.