Lee Hyeon-Jin

On March 26, 1991, five boys set off to the mountain to go frog hunting and never come back to their family. While a documentary producer, detective and professor try to solve the mystery of the incident, one of the boys' parents is a suspect.

Sang-woo receives painful surgery when he is ten, and murders another kid from trauma. After he receives hypnosis treatment, he disappears with his family. After 25 years, a successful doctor meets his old friend one day, and everything changes.

On March 26, 1991, five boys set off to the mountain to go frog hunting and never come back to their family. While a documentary producer, detective and professor try to solve the mystery of the incident, one of the boys' parents is a suspect.

Sang-woo receives painful surgery when he is ten, and murders another kid from trauma. After he receives hypnosis treatment, he disappears with his family. After 25 years, a successful doctor meets his old friend one day, and everything changes.