In the sweltering heat of mid-August, 37-year-old Diego Tribeca, a disillusioned travel writer, returns home to Rome after ten years of incessant travelling.
He needs an operation on his retina, which has become detached, confining him to a state of semi blindness. Diego despairs over his limited mobility until he discovers the battered old house phone is intercepting his neighbours’ calls. Soon he is addicted to the conversations of three women: Marta, who has cancer but has not told anyone, Agnese, who is pregnant with the child of her married lover and Giuli, who is battling anorexia and her mother. Though their provincial existences are everything Diego has tried to escape from, listening to their problems sparks his curiosity. Despite himself he becomes involved in their lives.
Diego finds ways to meet them, he starts meddling in their affairs and becomes particularly attached to Marta. But when he realises that Marta is falling for him everything changes, as his fear of responsibility and commitment once again take hold of him.