A blind man yearns to see the face of his wife of 30 years. A divorced mother has a secret affair with a travelling priest. A working mum contemplates taking the photographs of her late husband down from the fridge. A girl writes her last letter to the grandfather she adored. A palliative care nurse helps a dying woman converse with the angel at the end of her bed. A renowned 100-year-old scientist ponders the one great earthly puzzle he was never able to solve: What is love?