Emmi asks her mom what happened to Toni. Emmi's mother does not listen to her child until Toni never returns from school. In fact, Toni never even made it to school. Enter Inspector Anatole Wasser whose preliminary investigation turns up 11 other missing 10-year-olds who disappeared on the exact same day as Toni. The only link between the children is their age and that each lives near a lake. The first clue arrives on the tenth day whan all the parents receive the exact same letter from each child, giving the parents until the next full moon to meet some very cryptic demands.