Evelyn Glennie, world renown Scottish percussionist, Emmanuelle Laborit, winner of a Cesar, the utmost theatrical award, Maria Conchita Gil, flamenco dancer, Joel Challude, mime: four artists who have one thing in common, they are all deaf. For the exceptional quality of its protagonists, this film is a surprising and emotional discovery that leads to profound meditations about the different ways to perceive the world and the distinction between 'abnormal' and 'different.' Through their portraits, and thanks to their accounts, this documentary discovers a different dimension, where silence is made of colours, perceptions and vibrations, where communication is a sign language, where exceptional visual sensitivity succeeds in overcoming the barrier of sound, thus demonstrating that deafness is not only a medical diagnosis, but also is a cultural phenomenon.