A revealing portrait of Sylvie Guillem, one of the greatest dancers of our time. Hand-picked by Rudolph Nureyev at the age of 19, she was the youngest ever 'etoile', the highest-ranking female dancer at the Paris Opera Ballet and later, the star of the Royal Ballet here in London. A rebel who reshaped ballet, Guillem has always fearlessly pursued her own artistic vision, earning an uncompromising reputation and the nickname 'Mademoiselle Non!'. At 48 years old she remains an imperious physical force - but for how much longer? With an eye on life after dance, Guillem is now reinventing herself as an environmental campaigner. Filmed over several months with exclusive access, this programme explores what happens when a force of nature becomes a force for nature, and follows Guillem as she continues to defy her own body, confronting the future while remaining one of dance's most mesmerising trailblazers.