Two ex-lovers navigate their lives post-breakup — struggling to redefine their relationship, from partners to strangers and everything in between.
| Actor | Role |
|---|---|
 Lee Dong-hwiJoon-ho | Joon-ho |
 Jung Eun-chaeAh-young | Ah-young |
 Kang Gil-wooKyung-il | Kyung-il |
 Jeong Da-eunAn-na | An-na |
 Ko Kyu-pilNot listed | Not listed |
 Jong HoNot listed | Not listed |
| KKim Dong-hwanNot listed | Not listed |
 Uhm Ha-neulDong-gyu | Dong-gyu |
 Limm Yea-eunNot listed | Not listed |
| LLee Won-wookDoctor | Doctor |