Seok Goo is a man in his 30's, but has the intelligence of an 8-year-old. He runs a rice mill in a village, where kind neighbors and friends live nearby. One day, he sees a runaway girl, Eun Ji who is mistaken to have been a pickpocket at a village party.
Seok Goo helps her by resolving the misunderstanding. He and Eun Ji become friends afterwards. Teacher Kim is a teacher at a shelter where Eun Ji stays. Teacher Kim is worried about the friendship between Seok Goo and Eun Ji, but a Catholic priest sets Teacher Kim’s worries at ease.
One evening, something happens to Eun Ji at Seok Goo’s rice mill.