The detailed plot of the solitary castle! I don’t understand a bit! Everyone help

The plot is this: Laura grew up in an orphanage. On the day she was adopted, she and her five friends were still playing the game of "Wooden Man" together. After Laura left, the other five children played with the caretaker's deformed son, Thomas, as a prank and left Thomas alone in a cave on the seaside. As a result, the seawater rose and Thomas drowned. The five children were not punished because they were too young. Out of hatred, Thomas's mother killed the five children and packed the bodies and hid them in the hole in the wall of the hut (specifically, they were poisoned by the administrator. She avenged her son Thomas. In the film When the protagonist watched the video, there was a scene of eating dessert, which must have been the time that poisoned everyone). And the ghosts of the children have been wandering and crying in this building. Many years later, Laura returned to the orphanage with her husband and adopted son Simon. It was no longer an orphanage, but Laura wanted to rebuild it on a small scale and continue to raise 5 or 6 orphans. Simon was a child with HIV, and conventionally his life was likely to be short. Precisely because he was about to die soon, he could see the ghosts of those children (according to the theory of later "spiritual mediums") and became friends with them (first Thomas in the seaside cave, and later 5 in the building) a child), and also learned about the secret passage in the storage room under the stairs and Thomas's cabin. Laura and her husband didn't take Simon's "nonsense" seriously. Thomas's mother learned that the orphanage was going to be rebuilt, found Simon's information, and pretended to be a social worker to find out the information. In order to destroy the criminal evidence, she came to the cabin at night with a shovel, but the sound of smashing the wooden door on the hole in the wall woke up Laura. After being discovered by Laura, she ran away in a hurry, but the badge on her collar was left next to the hole in the wall. Simon played a treasure hiding game with five children, and the child hid his coins in the drawer where Laura concealed Simon's life experience and medical history. Simon learned about himself from the documents and Thomas's words. He pulled his mother to play this game together, following the clues of the treasure hunt, and pulled her until he opened the drawer, implying that his mother already knew everything. After his mother still evaded telling him the truth, he loudly told the truth. Mom and Dad talk to Simon and reassure him, but Simon begins to doubt their love. The party before the orphanage began to adopt children was about to begin. Simon watched other children coming to his home from the window. He felt a little disappointed when he thought that they might share their mother's love. At this time, his mother walked in and asked him to go downstairs to greet the guests, but Simon preferred that his mother be with him, so he strongly asked his mother to go to see "Thomas's Cabin" with him first. Simon's request seemed to be nothing more than nonsense to the busy Laura. In desperation, Laura surprised herself and slapped Simon. Simon covered his face, his eyes filled with resentment. Mother left him behind and went downstairs to entertain the guests. Simon went to Thomas' cabin and changed into Thomas' clothes and potato bag hood. Laura was worried about Simon and went back upstairs to find him. Simon, wearing Thomas' clothes, appeared in front of his mother. He couldn't forgive her, so he pushed her down and locked the door, and hid in Thomas' cabin again. Dad pried open the bathroom door, and Laura rushed out, ignoring her own injuries, looking around the house for Simon. She found the storage room under the stairs. She didn't find the secret passage in the wall, but she piled the iron shelves on the door of the secret passage. Simon is trapped in the secret passage and cannot get out. Laura ran to the seaside cave where Simon had been and saw Simon standing at the entrance of the cave that was immediately flooded by the tide. But in fact it was her hallucination, her husband saw nothing, and the police did not find Simon in the cave. At night, Laura, who had insomnia, heard some strange noises. Just when she looked into the room through the crack in the door, there was a heavy muffled sound (the stairs in the secret passage broke, and Simon lost his footing and fell to his death). Laura discovers a doll (actually representing herself and a clue to Simon) on the crib.

Thomas's mother died in a car accident. From her photos and videos, Laura discovered that it was "Thomas" who pushed her down that day (it was actually Simon wearing Thomas' clothes). Laura and her husband hired a "spiritual medium" and the results of the hypnosis surprised everyone present. They heard the child's cry. The light was too dark and the "spiritual medium" did not find Simon, but the "spiritual medium" told Laura: You are a great mother, as long as you believe, you can see (the medium once opened his sleeves and his arms were covered with scars, She said it was the result of dealing with death). Laura follows the prompts of the "spiritual medium" and begins to believe in the existence of ghosts. She tried talking to them, hoping to find Simon. A window behind him suddenly fell and the glass shattered on the stool next to the window. The first clue appeared: there were 5 dolls in the box (Laura's 5 little friends, with obvious characteristics: lameness, blindness, braces, etc. ). Following the clues, Laura found photos, roses, cloth strips, ice cream packaging, Simon's box, and a door handle (actually the door handle of the secret passage). Laura took the doorknob and looked around for the clues it represented. When she came to the small house in the yard, she accidentally discovered the badge left by Thomas's mother there, and then discovered the bones of five children in the hole in the wall. The truth about the children being killed by Thomas's mother was finally revealed. The husband could no longer bear the weirdness of this house and left. Laura insisted on staying for two days and continued to look for Simon. She rearranged the house as it had been when she was a child, put up a scarecrow, rang the bell, and met up with her childhood friends. In the evening, Laura tried to play the "wooden man" game in the room. After a few words, five children appeared one after another. Laura chased one of the children to the storage room under the stairs, and finally found the last clue represented by the door handle, found the secret passage, and discovered Simon. After the illusion passed, Laura found that there was only a piece of cloth in her arms, and "Thomas" was lying face down on the ground not far away, with the broken staircase above. Laura uncovered "Thomas"'s mask. Under the mask was her son Simon, who she had been looking for for 9 months and had been trapped in the secret room and lost his footing and fell to his death. Desperate and self-blaming, Laura held Simon's body and sat in front of the window of the orphan's dormitory. She grabbed the amulet "lent" to her by her husband ("Give it back to me when you find Simon") and committed suicide by taking medicine. Outside the window, under the light of the distant lighthouse, Laura watched her childhood self leave. Looking back, Simon and the other five friends looked at her with smiles. The door opened and Thomas walked in with a mask. In another world, the world of ghosts, the grown-up Laura takes care of the seven children who will never grow up, and lives happily...