What's the worst that can take place to a policeman? Definitely an unsolved investigation. This is what happens on Boxing Day 1999. Charlotte Meyer, an 11-year-old lady, goes away without a trace. Captain Pierre Castaing, accountable of the examination, falls short to find her. Where did she go? The secret stays undamaged ... A couple of hundred kilometers away, a young private investigator discovers herself confronted with a comparable disappearance ...