NOVA presents a minute-by-minute eyewitness account of the Hurricane Katrina disaster, exploring why the flood defenses and disaster relief planning failed to match Katrina's fury. What made this storm so deadly? How accurately did scientists predict its impact? And why are powerful hurricanes like Katrina likely to strike more often? The program will investigate the immense challenges posed by rebuilding New Orleans, and why-despite all the knowledge of the peril faced by its citizens-the city was so tragically unprepared when the long-feared disaster finally struck.