The plane was delayed and detectives waited at the airport all morning. They are waiting for an expensive box from South Africa, which is full of jewels. A few hours ago, someone told the police that thieves might try to steal those jewels. When the plane arrived, some detectives were waiting in the main building, while others were waiting at the airport. Two men took the parcel off the plane and took it into the customs building. At this time, two detectives held down the door, while the other two detectives opened the package. To their surprise, this precious box is full of stones and sand.