Yujeong, who works as a night shift nurse at a general hospital's cardiology department, is now told that her 12th-grade younger sister, Kijeong, has been arrested by the police as a suspect in an infant abandonment case. Only then does Yujeong start to make desperate efforts to rescue her sister.

This humanitarian coming-of-age story depicts the everyday life of ordinary people like those, whom you may pass by in your neighborhood daily, but would not pay much attention to. The characters in the movie find hope and the path for their future while coping with each one’s own crisis, conflict and changes in their lives.

In-chul, a scholar of botany, is climbing a mountain for some research when he meets Jin-suk who lives in a forest cottage. At the request of Jin-suk's father, Sang-do, In-chul stays and lives with them. One day, a snake catcher falls under the temptation of Sang-do and is used as a body for dissection. While probing dubious action of Sang-do, In-chul is captured and locked in the basement. He is to become the subject of a live dissection. In-chul had been suspicious of their behavior and investigating when he was caught. In-chul is lying on a surgery table when he escapes with the help of a young hiker and Jin-suk. Sang-do confesses that he had been suffering from nightmares ever since he was dragged off by the Japanese and forced to perform live dissections. These nightmares have made Sang-do a murderer. After his confession, Sang-do kills himself. In-chul and Jin-suk leave the cottage.