The story follows Christine, a woman suffering from anterograde amnesia, a condition that causes her to forget everything she has experienced every time she falls asleep. Each day she wakes up in the bed of a stranger, who turns out to be her husband, Ben, who has been by her side trying to rebuild the life she lost. However, the truth is that Christine has no memories of her past life or her relationship with him; each day is like starting over.
Ben does everything he can to help her, but his routine becomes increasingly exhausting. The situation complicates when Christine starts receiving messages from a mysterious doctor who has been secretly helping her. This doctor encourages her to keep a journal where she tries to reconstruct her story and uncover the truth about her life. As she reads her own notes, Christine begins to question reality and unravel a series of dark secrets about her marriage and what really happened to her.
With each page of the journal, the tension increases, and Christine realizes that not everything is as it seems. The film explores the fragility of memory and the quest for identity in a psychological thriller that keeps you on the edge of your seat. As Christine tries to find answers, she faces an unexpected twist that could change her life, or even put it in danger.