Michael Corleone was born of the Don and his wife, the leaders of a gang. Later in his life he takes the role as the leader of the gang.
Since Michael was the son of Don Vito Corleone, he felt as if he could get away with anything because his dad loved him very much. What he did not know was that his dad was trying to live through him.
Michael's tragic flaw was that he fought with his dad about joining the military. This made his dad mad and wanting to make him the Don even more after his time was up.
Michael is the one of the Main protagonists in the Movie and Book along with his father. His father is Don Vito Corleone and is the leader of a gang. After he dies he appoints Michael as the gang leader which turns him into a dark and monstrous person he never thought he would become.
Michael suffers the catastrophe of him becoming the leader of the gang formerly ran by his father. He comes home see his wife get shot and die at his feet.
The restoration of the movie and book is when Michael dies alone in his office. He had become a man that he told his wife that he would never be and a man that he never though he would become. He dies with no one around him which is ironic because all his life he always had people around him.