A sixteen-year-old boy insinuates himself into the house of a fellow student from his literature class and writes about it in essays for his French teacher. Faced with this gifted and unusual pupil, the teacher rediscovers his enthusiasm for his work, but the boy’s intrusion will unleash a series of uncontrollable events.

Cal Zimmerman, a scientist, is questioned about an experiment he carried out two years ago. Back then, Abel, a man who is heavily invested in his career at the service of a scientific research laboratory, suddenly loses his wife and their only daughter. He is going through a dark period of grieving and loneliness when his world is suddenly turned upside down by the arrival of a child who is the looks very much like his daughter. Overwhelmed, he refuses to lose his mind and confronts this presence, learning how to get to know this girl.