Bori, an 11-year-old girl in a seaside village, is the only family member who can hear. As an elementary school student, Bori becomes more and more accustomed to talking with her friends while finding it hard to communicate with her family in sign language.
| Actor | Role |
|---|---|
 Kim Ah-songBo-ri | Bo-ri |
 Lee Rin-haJung-woo | Jung-woo |
 Kwak Jin-seokHae-jin | Hae-jin |
 Heo Ji-naMother | Mother |
 Hwang Yoo-rimEun-jeong | Eun-jeong |
 Kim Jong-gooGrandfather | Grandfather |
 Kim Ja-youngAuntie | Auntie |
 Choi Dae-sungEun-jeong's Father | Eun-jeong's Father |
| KKim Jong-MoonYoung Teacher | Young Teacher |
| KKim Tae-hyunHomeroom Teacher | Homeroom Teacher |
 Shin Woo-heePolicewoman | Policewoman |
 Im Ho-kyoungDoctor | Doctor |
 Lee Bo-ramClothing Store Owner | Clothing Store Owner |
 Jung Yi-rangSupermarket Middle-Aged Woman | Supermarket Middle-Aged Woman |
 Heo Jeong-doFootball Newscaster (voice) | Football Newscaster (voice) |
 Jeon Seok-chanFootball Commentator (voice) | Football Commentator (voice) |
| IInanFootball Coach | Football Coach |
 Lee Ha-eumClothing store | Clothing store |