Chord: A set of three or more notes that sound at the same time. Nicolas and Marie are an ordinary married couple who live peacefully in their Normandy villa. He goes out to work every day installed in his routine, he settles for little and is happy with the tranquility of knowing that everything is still in its place. His wife is different. She dreams and travels through music. Their lives will abruptly change when Marie's refined piano teacher teaches her something new: Chords.