What is the main conflict in American Short Story Masterpieces by ?

Sonny's brother is a kind, loving man who teaches at a local school. He has not spoken to his brother in many years, as they had a falling out over his brother's drug use. When Sonny's brother's daughter dies, the brother finally contacts Sonny, and the two rekindle their relationship. The brother has difficulty understanding Sonny, because he himself has not led the life of his brother.