On the afternoon of the day before her school trip, Se-mi wakes up from her strange dream and heads to her Ha-eun. It was because she felt like she had to convey the feelings she had been holding back for a long time today. However, unlike her overflowing heart, the two keep falling apart.
| Actor | Role |
|---|---|
 Park Hye-suSe-mi | Se-mi |
 Kim Si-eunHa-eun | Ha-eun |
 Lee Do-eunHan-na | Han-na |
 Park Seo-kyoungYe-jin | Ye-jin |
 Oh Woo-riDa-ae | Da-ae |
 So A-rinSun-young | Sun-young |
 Kim Bo-youngMi-jin | Mi-jin |
| HHan Ki-ockJi-hyun | Ji-hyun |
 Lee Tae-kyungJi-hye | Ji-hye |
 Kim Shin-biByeong-jun | Byeong-jun |
 Kang Ae-simGranny Nurse | Granny Nurse |
 Park Jeong-minDory Daddy | Dory Daddy |
 Kil Hae-yeonDog Owner | Dog Owner |
 Park Mi-hyeonSe-mi's Mother | Se-mi's Mother |
 Park Won-sangSe-mi's Father | Se-mi's Father |
 Ryu Hyun-kyungHye-gyeong | Hye-gyeong |
 Park Jong-hwanJi-hun | Ji-hun |
| AAn Bo-youngFuneral blessing | Funeral blessing |
 Cho Hyun-chulJi-hye's Boyfriend | Ji-hye's Boyfriend |
| PPark So-minExtra | Extra |