Surrounded by a string of deaths, an older woman relives her romance with a mysterious, ageless lover as an inspector closes in on their dark secret.

After 8 years of marriage, a childless couple named Clark and Eileen meet a little girl who one day, came knocking at their door claiming to be Clark's child. Despite the unexpected situation, the wife accepts the child and temporarily fosters her while figuring the next steps. Meanwhile, Clark investigates the child's history while Eileen begins to develop an odd and eerie relation with the child.