Ben runs into a prostitute on the street. He doesn't take advantage her services, but after a conversation with her, he realizes that many people need help, and wants to be the one to provide it. He begins to make Dr. Katz and Laura feel guilty about themselves, that they're not out on the streets "making a difference", like he is. After a week, Ben gives up, especially after he unknowingly chides a friend of Katz's to improve her life, as he assumed she was a prostitute.