Lost

She thought the worst was behind her, but her nightmare has only just begun.

After a stressful period, Libby decides to go on holiday with her three-year-old son Ethan. The atmosphere in the hotel where they are staying is peaceful, but Libby feels like they are being watched. She fears that it has to do with the secret she has been carrying with her for years.
One day, when Libby is distracted for a moment, Ethan enters an elevator by himself. Libby is not in time to stop the doors from closing, and when she runs up the stairs to the floor where the elevator has stopped, she finds it deserted. Ethan has disappeared without a trace.

During the desperate search that follows, it slowly becomes clear to Libby that she is not the only one looking for her son, and that she can no longer run from her past.