Tomorrow Sophie will turn 40. However, in many ways she still behaves like a girl: when she goes to bed alone, she leaves the light on in the bathroom and lies down so that she can see the door open. On the night before her anniversary, Sophie suddenly wakes up in complete darkness and is horrified to find a stranger right next to her bed. He takes a letter from his pocket and tells Sophie to open it in the presence of all her family and friends at her birthday party, at exactly eight in the evening. Otherwise, her mother and sisters are in mortal danger! The man disappears as suddenly as he appeared, and Sophie is seized by real panic. Maybe this is some kind of mistake? But the letter, with a faceless seal of red sealing wax, had her name printed on it, and the stranger was clearly not joking about the threat. And that means she will have to fulfill his condition...