en Kevin MacKenzie, also known under the name of Mack, a talent law student, who is deceased it ya ten years ... each year, but he calls his mother for Mother's Day and has refused to answer questions, and then hangs up. The death of his father in the tragedy of September 11 there ya not to return. Pushed by the necessity of a line in the tragedies that have struck his family has moved, the sister of Mack Carolyn, in order to shed light on the disappearance of his brother.