The first episode looks at how ideas, music and lifestyles from Asia, Europe and the American Left became entwined in California. It traces the roots of the hippies back to a 19th-century German sect of wandering naturalists called Lebensreform who brought their freethinking ideas about nature to California after the Second World War. There they merged with a growing interest in Eastern mystical concepts of human nature imported to America by maverick British thinkers like Aleister Crowley and Aldous Huxley. Add to this mix a wonder drug first developed by the CIA called LSD and a wave of student activists and anti-war protestors agitating for revolution and you have the astonishing story how these forces came together to give birth to the Summer of Love in San Francisco, 1967.