When a Chicago man decides to add Pet Milk to his coffee, the old-fashioned dairy product stirs up memories of his polka-loving grandmother and his beautiful college girlfriend.

Upon encountering a former student of his on the train, a pompous writer is knocked off of his pedestal.

An academic in Cambridge encounters a man who has decided to lose his memory each day at 3:30 am. Each time they meet, the man doesn't remember him.