Sky Trackers
At a satellite tracking station where their mother, Spencer, works, Ali and Fiona meet Mike whose father has come to work on a special project with Spencer. Ali is a computer buff and, whilst hacking into the station's mainframe computer, becomes aware of a falling satellite and decides to be the first person to locate it when it lands. Ali is in danger, however, as another unknown hacker is also aiming to be first on the scene.