在这部神速侦探喜剧/犯罪片中,故事讲述22歳的美女一华（广濑爱丽丝）得到亡父的5兆円遗产，因此被父亲的兄弟姊妹狙击想把她杀死夺取金钱，为了保护她，和她共住的家政妇桥田政子（水野美纪）雇用了名侦探千曲川光（泷藤贤一），他为人神出鬼没性格偏执，会在刺客实行杀人计划前就把其阴谋揭开，更会说明其诡计及以加以奉还，带来一部「没有犯罪没有杀人」的推理剧。
Hikaru Chikumagawa is a private investigator. He has a fussy temperament and he is not good at communicating with others, but he is the fastest detective in the world. Ichika Sogawa is a normal university student. After her father's sudden death, she receives an inheritance of five trillion yen. She is also targeted by her relatives. Private Investigator Hikaru Chikumagawa tries to protect Ichika from harm.
总体看来意外的还可以‖居然。
