The awkward, distant, and wounded three sisters gather at their hometown for their father's birthday. However, on the day of the party, there is a big mess because of their little brother Jin-seob's abnormal behavior, and the past of the three sisters slowly reveals.
| Actor | Role |
|---|---|
 Moon So-riMi-yeon | Mi-yeon |
 Kim Sun-youngHee-sook | Hee-sook |
 Jang Yoon-juMi-ok | Mi-ok |
 Cho Han-chulDong-wook | Dong-wook |
 Hyun Bong-sikSang-jun | Sang-jun |
 Kim Ga-heeBo-mi | Bo-mi |
 Kim Ji-anYoung Mi-yeon | Young Mi-yeon |
| IIm Hye-youngHyo-jeong | Hyo-jeong |
| KKim Sung-minJin-seob | Jin-seob |
 Jang Dae-woongSung-woon | Sung-woon |
 Cha Mi-kyungMother | Mother |
 Im Cheol-sooStudent | Student |
 Kim Eui-sungJeong-beom | Jeong-beom |
 Lee Bong-ryeonSupermarket Owner | Supermarket Owner |
 Jung Ji-wooChurch Woman | Church Woman |
 Jang SunTeacher | Teacher |
 Kang Suk-wonChoir Member | Choir Member |
 Park Sung-jinChurch | Church |
 Han Dong-wonChurch | Church |
| LLee Song-heeFather | Father |
 Jung Chung-guChurch | Church |
 Kang SookChurchgoer | Churchgoer |
 Hyeon Eun-yeongMusic tutor | Music tutor |
 Song Chi-hoonFather | Father |
| YYeon Joon-wonChurchgoer | Churchgoer |
 Kwon Hyuk-sungKkandori Man | Kkandori Man |
 Jung Hwan-wookChurchgoer | Churchgoer |
 Lee Ji-hyeDeaconess 3 | Deaconess 3 |
| KKim Seon-jinChurch Clerk 2 | Church Clerk 2 |
| LLee Na-minChoir Member | Choir Member |