When 54 high school girls throw themselves in front of a subway train it appears to be only the beginning of a string of suicides around the country. Does the new all-girl group Desert have anything to do with it? Detective Kuroda tries to find the answer, which isn't as simple as he had hoped.

八木是专门在百货公司捉扒手的保安员，因为旧日情人的妻子被杀，而背上杀人嫌疑。为了洗刷冤屈，她决定主动出击。同栋公寓的小光棍、热心的侦探、可疑的窈窕女子……，谁才是凶手？这和左手又有什么关系？