A comedy adventure beginning in London in late 1974. An elderly widow of an eminent archaeologist who lived in Notting Hill and was involved in the finding of some hidden penny black stamps, brings home a real dinosaur bone to compare it to an imitation one. Her dog breaks the false bone and falls sick. A friend, who was visiting her, collected the residue contained within the false bone and gave it to a policemen friend. It was identified as heroin and investigations lead the police to Museums in England who had bought the false bones, being part of a display of Dinosaurs, to a raid in Holland, where the policeman, who took part in a raid, had a fight in a sex club. The chief constable, however, knew the truth and engaged him as a undercover agent to resolve other police matters and placed him with a strange, portly ex cop, as an assistant. After many comical situations, the truth was finally revealed. The policeman became a hero and gained fame and fortune.