Cited as Zao Wou-Ki’s greatest artistic influences, Paul Klee revolutionised the traditional concept of composition and the use of colour like his contemporaries Kandinsky and Delaunay. Klee questions forms, lines and colours. He listens to nature, to the sciences of his time, to music and poetry, creating a language made of signs that is founded on movement, rhythm, as well as on oppositions and tensions. The film by Michael Gaumnitz, is a sacred journey into the universe of an architect of colours, one of the great painters of the 20th century.