During the flight Berlin-New York, performed by a trendy Boeing 747, Kyle Pratt's 6-year-old daughter Julia suddenly disappears without a trace. Experiencing emotional distress after the untimely death of her husband, Kyle is desperately trying to prove her sanity to crew members and passengers not believing her. However, the situation is so absurd and fantastic that she also begins to doubt the adequacy of her perception of reality. In addition, the evidence suggests that Julia wasn't on board. Realizing that to solve the mystery and save her daughter she would have to act alone, Kyle decides to entirely rely on her wits and ingenuity.