Rieke and Leonie manage a travel agency in Wuppertal and now Rieke is the driver of the bus of the travel agency on tour in Greece.At night Rieke has arrived at the Piraeus: the bus was parked before the hotel.In the night Rieke has a nightmare and on the morning when she goes to the balcony and looked at the street the bus has disappeared.Her sister Leonie tells her by phone t...