The story, I think it's pretty clear, he arrives at an abandoned house and he found with this girl. He sees through her memories, she was living a miserable life with her family.
He feel her pain and try escaped. But the girl no let him.
He run looking an out. But he seen the girl everywhere, run and falls down the stairs.
He severely injured and unconscious. Then wake up and find a way out, but it starts all over again.