The 1 season of Zero Hour was broadcast on History from dimanche 29 août 2004 to dimanche 19 septembre 2004. It consists of 4 episodes, the first one is called "Disaster at Chernobyl" and the last one "Terror in Tokyo".
This dynamic original series dramatizes the final hour leading up to several pivotal historical events, tracking happenings as they unfold, minute by minute. Using a real-time clock and a split-screen to follow key players, the series reveals the chilling lead-up to events that changed the world including the Chernobyl nuclear meltdown, 9/11 and the Columbine shooting.