Jenny and Michael and their 7-year-old son Tim live in a nice house in the suburbs. Sandra and her husband Guenther have moved into their neighborhood just recently and Jenny is helping them to settle in. Tim and Sandra’s little daughter Luzi are in the same class. One day, when Tim and Luzi are playing in the woods, Luzi is accidentally killed. Several indications imply that Tim is somehow connected to Luzi's death. In order to protect her son, Jenny decides to lie so that no one will ever relate Tim to the tragic incident. She urgently warns him not to tell anybody the truth--not even his father, who, as a police detective, is in charge of the case.