Jeong-in (Lim Soo-jung) and Do-hyun (Lee Sun-kyun) met in Japan because of an earthquake. After a sweet period of passionate love, they soon entered into marriage, but the seven-year itch came as expected. Jeong-in became a nagging, sarcastic, and unlistenful woman, and Do-hyun was exhausted by the food and rapid-fire words that were attached to her every day. Do-hyun applied for a job transfer, but Jeong-in followed him without permission. Do-hyun, who had no way out, found that there was a playboy named Jang Seung-gi (Ryu Seung-ryong) who had never failed living next door, so he decided to hire him to seduce his wife to cheat and get rid of her. It was originally planned to succeed in 2 months. Jang Seung-gi gradually approached Jeong-in. At the same time, Jeong-in's radio job arranged by her husband unexpectedly blossomed and she became a popular DJ and was invited to Seoul for development. His wife's nagging gradually faded away, but Do-hyun began to realize his feelings. The work of hiring a love saint went smoothly. Jang Seung-gi actually fell in love with Jeong-in and boldly confessed to her. Now it is Daoxian's turn to be at a loss. He hopes to get his wife's forgiveness and win her back at all costs, but Zhenren seems to have made up her mind to divorce...