Kwak Min-yeong

A small village in an island. Juyeon whose mom left her only cares about her best friend-Kyunghee. One day, a transfer student-Soyoung moves to her village and everything begins to be changed.

A woman who has shut out the light of her emotions, Doah. Amid a bitter divorce and custody battle, she locks every feeling into darkness using the "Gray Rock" strategy. As a school counselor, she heals students’ wounds while hardening her own pain into cold stone, concealing cracks in her identity between a demanding mother and an emotionally numb workplace. Everything holds—until a single outburst during a visit with her daughter fractures her armored shell.

A young woman is late for an important job interview when she notices a woman falling ill just as the train drives into the station.