vito is better and hears about his son's death. he sets up a meeting with the five families. at the meeting, vito promises he will not get back at them for his son and will enter the drug business. michael returns home to new york because he is safe now. michael marries kay and has two children. michael starts taking over the family business. vito tells michael that dan barzini is responsible for sonny's death. michael sends tom hagen to las vegas and gets advice from his father. michael wants to move his family to las vegas and meets with moe greene. he learns that fredo is more loyal to greene than to the corleone family.