Many years ago, Laura left the orphanage where she had spent her childhood. Now, thirty years later, she returns with her husband Carlos and her young son Simon, with a dream of restoring and reopening the long-abandoned orphanage as a home for disabled children. But the mysterious surroundings awaken Simon's imagination and the boy starts to spin a web of fantastic tales and not-so innocent games...

As events take a sinister turn, Laura slowly becomes convinced that something long-hidden and terrible is lurking in the old house, something waiting to emerge and inflict appalling damage on her family.