In this documentary the BBC have exclusive access to Agnetha Fältskog, 'The Girl with the Golden Hair' as the song goes, celebrating her extraordinary singing career which began in the mid-60s when she was just 15. Within just two years, she was a singing sensation at the top of the charts in Sweden. Along came husband Björn Ulvaeus and the phenomenal band Abba that engulfed the world in the 70s, featuring Agnetha's touching voice and striking looks.