In Japan, the rate of return on capital far exceeds the rate of economic growth, and the resulting educational disparity leads to social isolation and reduced communication skills. A journalist who witnessed a murder on the subway characterized the culprit is socially vulnerable. Then, she confronts the culprit and searches for answers. This provokes a threat experiment against the citizens of Tokyo. If 100 billion yen was not remitted, Tokyo would be reseted by an atomic bomb.