It's 1985 and Teddy, a 9 year old Korean boy, moves with his adoptive American parents from Conneticut to Seoul, as his father will be working at the university.
Teddy doesn't know a lot about his real parents, in fact all he knows, is the name of his real mother, Jung Eun-hee. Being now in Korea, he often imagines, what it would be like to meet her and finds himself looking at other students, who might resemble him and could be an older brother or sister. Two month after their arrival in Seoul his father brings home a colleague in the evening. She is introduced as Mrs. Kim.
Teddy feels there is more to Mrs. Kim, than his parents are willing to admit and he would like to spend more time with her, but his adoptive mother isn't keen on Mrs. Kim or her visits and the boy is confused by it.
Eventually an outing is agreed upon and the three of them, boy, adoptive mother and Mrs. Kim, embark on a trip to the national park. The day will result in a revelation, which certainly the boy will remember for the rest of his life.

The author, who has been adopted himself, brings the boy's feelings and thoughts excellently across. I can only imagine, that the "How could you leave me?" must haunt every child at some point in their lives, who has been handed over for adoption by their real mother/parents.
But for me it's the revelation of his adoptive mother at the end of the story which made my skin crawl and I don't think, I will forget this short for quite a while.
First class storytelling. ( )