"School for Secrets" tells the inside story of the 'Boffins' - Britain's backroom boys - who developed the miracle discovery of radar and helped stave off the German invasion of Britain in 1940. Five different scientists, led by Professor Heatherville (Ralph Richardson), are brought together and work in total secrecy and under incredible pressure in a race against time to develop this vital weapon. Their dedication disrupts their family lives as they are forced to sacrifice everything to make the great breakthrough. Their success is illustrated by the effect Radar has on the fighting abilities of the RAF over the skies of Britain in those crucial summer and autumn months of 1940. However, Germany is also planning its own Radar capability and British commandos must be despatched to strike at a vital Nazi installation.