Two college-age young women are dragged into the world of a doomsday cult, Aum Shinrikyo. An obscure religious group who believed the end of the world was coming. In Tokyo, Millions of commuters step out into a bright spring morning and on to one of the world's busiest underground systems. Also on board the trains: five bags filled with liquid nerve agent, left by members of a doomsday cult. Thirteen people died and at least 5,800 were injured in five co-ordinated attacks on three train lines. The cause was Sarin, a nerve agent developed by the Nazis. It was the worst domestic terror attack ever carried out on Japanese soil.