Walnut tree

Dong-gyu, who resides in Gimcheon, travels to Seoul to show his mother's Itaewon house to potential renters. There, he meets Shinji, a Japanese national reportedly involved in human rights activism in Korea. During their second meeting at the house, Dong-gyu discovers that Shinji is staying in the country illegally. Even after returning to Gimcheon, Dong-gyu is unable to shake his concern for Shinji and proposes they meet again in Itaewon, specifically on Halloween night.