A bereaved woman and her daughter are flying home from Berlin to America. At 30,000 feet, the child vanishes, and nobody will admit she was ever on the plane.

The husband of aviation engineer Kyle Pratt has just died in Berlin, and now she is flying back to New York with his coffin and their six-year-old daughter Julia. Three hours into the flight Kyle awakens to find that Julia is gone.

It's a big double-decker plane, so the very concerned mother has a lot of territory to cover in order to find her daughter. She takes matters into her own hands as she fights to discern the truth.