Pete Johnson, a market trader dealing in dodgy goods, gives his young son Mike an early Christmas present - a powered moon buggy called Lunar Race 2000. As soon as the buggy is plugged in, it bursts into flames, causing Mike severe burns, and he finds himself in hospital. However, Pete lies to the hospital staff about the cause of the accident, as he had bought a box of the games believing them to be stolen.Eddie meets Mike while he is at the hospital delivering presents in the children's ward, and a doctor tells him that Mike has given a different story which may need investigation. Eddie gets the truth out of Pete, who says he has sold the other moon buggies, and Eddie begins broadcasting warnings about the potentially dangerous toy - but then the radio station is threatened with legal action by Wing's, the manufacturers, who say there is no such product...