Emily and Sebastian travel to his hometown of Paris to land the Ad account of famed Durand Diamonds and end up in a tricky situation when the client mistakes them for a happy couple.

In town for a job interview, a young woman arrives at her Airbnb late at night only to find that it has been mistakenly double-booked and a strange man is already staying there. Against her better judgement, she decides to stay the night anyway, but soon discovers that there is much more to be afraid of in the house than the other guest.