Gyeong-soo and Jeong-min used to be the happiest couple in the world. However, Jeong-min is left home alone after her husband leaves to the regional area for a lengthy business trip. While she tries to deal with her lonely feelings, her son’s tutor Min-hyeok starts flirting with her hard. And although Jeong-min knows she shouldn’t, she starts being attracted to Min-hyeok more and more. Meanwhile, Gyeong-soo finds his place in a boarding house in the regional district and starts getting attracted to the owner of the board house, who is a single mother with a young daughter.
| Actor | Role |
|---|---|
 Han Seol-hwaKyeong-soo (경수) | Kyeong-soo (경수) |
 Park Hyun-jungJeong-min (정민) | Jeong-min (정민) |
 Kim Jin-seoSoo-jeong (수정) | Soo-jeong (수정) |
 Park Do-jinMin-hyeok (민혁) | Min-hyeok (민혁) |
 Baek Se-riHyeon-joo (현주) | Hyeon-joo (현주) |
| KKim Seok-hoKang-woo (강우) | Kang-woo (강우) |
| HHan I-sooHyo-in (효인) | Hyo-in (효인) |
| PPark Sya-ronSe-yeong (세영) | Se-yeong (세영) |
| SSong-biKang-woo's wife (강우부인) | Kang-woo's wife (강우부인) |
| KKim Hye-yeonElevator woman (승강기녀) | Elevator woman (승강기녀) |
 Tae-seongHyeon-joo's husband (현주남편) | Hyeon-joo's husband (현주남편) |
 Yoo Jong-haeSecurity guard (경비원) | Security guard (경비원) |