The dervishes are best known for ' whirling ': a spinning dance that is also a mystical exercise. Dervishes are the mystics of Islam - a religion in worldwide revival. Britain has a large immigrant Muslim population, but very few converts to Islam. This film features a group of British people who have become dervishes (also known as ' Sufis '), a process which includes a conversion to Islam, and who now live according to the teachings of the Koran.