Last in the 'Mission Top Secret' series of six titles. The Centauri Network, an international computer-linked association of children, is threatened by an old enemy, Neville Savage, who aims to strike at Centauri's 'brain'. The Network is connected by the world's most powerful computer, which is housed in a farm in the Australian outback. The ABC TV series of the same name is a co-production of Grundy Australia Productions and Quartier Latin Productions for the European Children's Film Corporation.