Lydia Tár, the avant-garde conductor of a major German symphony orchestra, is at the height of her art and career. Her book launch is approaching and she is preparing a highly anticipated concerto of Gustav Mahler's famous Symphony No. 5. But in the space of a few weeks, her life falls apart in a singularly timely way. What emerges is a searing examination of the mechanisms of power, their impact and their persistence in our society.