This documentary about The Beatles examines the twelve months (Aug 1966-Aug 1967) that would arguably be the most crucial in the band’s career—a year in which they stopped being the world’s number one touring band and instead became the world’s most innovative recording artists, pushing the boundaries of what could be achieved in the studio. This time in their career was mired by controversy, but sparked a period of rebirth and extreme creativity in the midst of Swinging London, and resulted in the creation of their new alter ego, Sgt. Pepper.