The story line of this movie was nonsensical. A boy arrives at home of a woman (Kidman) with absolutely no critical thinking skills. The boy claims to be her reincarnated ex-husband. She invites him in and goes along with his ridiculous story.
Spoiler alert: it was a con. The boy was given information by a woman who hated Kidman.
To try and explain any more of the ridiculous plot would just be a waste of time. Don't bother!!