Gary Kent is a planespotter — he loves watching planes take off and land. He knows all the planes, all the airlines and all the flights. When Gary sees something strange at the airport one afternoon, he tries to find out what the problem is. Soon he realises that Flight PP401 to Los Angeles is in danger. Gary knows he has to help — but who's going to listen to a thirteen-year-old boy?

Ariuna and her brother Tuli live in Mongolia. When Tuli and his horse are hurt and cannot ride in an important horse race, Ariuna decides to take his place. Some people say that her horse isn't fast enough, but Ariuna is determined to show that they are wrong.