Georges and Anne are an octogenarian couple. They are cultivated, retired music teachers. Their daughter, also a musician, lives in Britain with her family. One day, Anne has a stroke, and the couple's bond of love is severely tested.
Famous composer Martin meets concertmaster Barbara at one of his performances, and the two fall in love. After divorcing their spouses, Martin and Barbara marry and begin a happy life together. Five years later, as the couple is working on a new opera, Martin is diagnosed with Alzheimer's disease. As Martin's condition worsens and his personality changes, the couple strain to hold on to the love that once brought them together.