Where did Simon go in the movie of the orphanage?

In the movie "The Orphanage," Simon, the young boy, goes missing after playing a game with his friends in the woods near the orphanage. As the story unfolds, his disappearance becomes a central mystery, leading his mother, Laura, to search for him desperately. The film explores themes of loss and the supernatural as Laura uncovers the dark history of the orphanage and its former residents.