How well do you know your partner? Chloe thought she and her husband Lucas shared no secrets, but when she opens the box hidden under the floorboard and finds the fake documents, she knows her husband is hiding something from her. As much as she wants to know the truth, she can't confront Lucas about it, so she embarks on a secret investigation. The deeper she digs, the more unsettling things she unearths, and the illusion of the lie she's been living crumbles with revelation. Chloe is faced with a terrible realization: Seeking the truth comes with a cost, and it could result in losing far more than just her marriage.