James McNeill Whistler was one of the most innovative artists of the 19th century, challenging Victorian conventions with his pursuit of 'art for art's sake' and his distinctive approach to tonal harmony in painting. Best known for Arrangement in Grey and Black No. 1 (Whistler's Mother), this film explores the artist behind one of history's most iconic paintings. Filmed alongside Tate Britain's first major Whistler retrospective in three decades, this documentary showcases his remarkable works and lasting influence on the art world.