Alan Yentob presents a documentary telling the story of Yusuf Islam - the singer/songwriter who captured the hearts of a generation in the 60s and 70s with songs like Moon Shadow and Morning Has Broken under the name Cat Stevens. Yusuf explains that his hit songs were written to help him out of a spiritual depression, and that he shared with his listeners a quest for a deeper meaning to life. After a decade of flirting with religion he finally converted - after a near drowning incident off Malibu beach he promised to serve God if he was saved; he was and it was to the Koran he turned. Now one of Britain's foremost representatives of Islam, founder of a Muslim School paid for by his royalties, he has finally returned to the music he abandoned 23 years ago.