Yoon-jung accidentally calls a stranger, instead of her boyfriend, and has phone sex with the unknown man. When Yoon-jung's relationship with her boyfriend turns sour, Yoon-jung meets Hyun-seung, the stranger she had phone sex with.
| Actor | Role |
|---|---|
 Kim A-joongYoon-jung | Yoon-jung |
 Ji SungHyun-seung | Hyun-seung |
 Shin So-yulSo-yeon | So-yeon |
 Kang Kyung-joonSeung-joon | Seung-joon |
 Kim Seung-ohSeok-woon | Seok-woon |
 Moon Ji-yoonYoung-min | Young-min |
 Kim Bo-miYoon-mi | Yoon-mi |
 Kim Bo-yeonYoon-Jung's Mother | Yoon-Jung's Mother |
 Ok Ji-youngSoo-Jung | Soo-Jung |
| SShin Hae-ChulSinger | Singer |
 Jeong Soo-youngJin-Joo | Jin-Joo |
 Kim Joon-hoRestaurant Worker | Restaurant Worker |
 Shin Hae-chulRadio DJ | Radio DJ |
 Kwak Ji-minAh-ra | Ah-ra |
 Kim Joo-ryoungSea Turtle Woman | Sea Turtle Woman |
| JJeong Hyeong-HoHyun-seung's Company Employee 1 | Hyun-seung's Company Employee 1 |
 Choi Eun-sukHyun-seung's Company Employee 3 | Hyun-seung's Company Employee 3 |
 Yoon JooHyun-seung's Company Employee 4 | Hyun-seung's Company Employee 4 |