Matchmaking company Rex exists to serve the wealthiest high class individuals. Their clients want to enter this high class world or maintain their status at the top through marriage or remarriage. Clients, including Seo Hye-Seung (Kim Hee-Seon), Lee Hyung-Ju (Lee Hyun-Wook), sign up with Rex for their own purposes. Seo Hye-Seung wants revenge.