The Mystery of the Green Hill
Original title: Uzbuna na zelenom vrhu
German title: Das Geheimnis des Grünen Hügels
Koko and his friends spend their summer holidays on the shore of a lake near the idyllic Green Hill. But the magical summer is disturbed by mysterious events that alarm both the children and the locals. The children were just sitting around the campfire telling each other horror stories – now they have to get active themselves.