Kim Ah Song (Bo Ri)Lee Rin Ha (Jung Woo - Bo Ri's brother)Jin-seok Kwak (Father)Heo Ji Na (Mother)Hwang Yoo Rim (Eun Jeong - Bo Ri's best friend)Dae-Sung Choi (Eun Jung's Father)Jong-Moon Kim (Young Teacher)Kim Tae Hyun (Homeroom Teacher)Shin Woo Hee (Policewoman)Kim Jong-goo (Grandfather)Kim Ja-yeong (Aunt)Im Ho Kyoung (Doctor)Lee Bo Ram (Clothing Store Owner)Yi-Rang Jung (Supermarket Middle-Aged Woman)Inan (Football Coach)
Bo Ri is the only family member who can hear. She talks to her friends while finding signing with her family difficult. Wishing to be deaf, she jumps into the sea and loses consciousness. Waking up in the hospital, she pretends she's deaf.