The story enters around Inugashira Kotaro, a mysterious man with a good memory and deductive skills as he solves various bizarre incidents that occur at the different real estate properties, such as suicides, poltergeist, disappearances, rubbish houses. (Source: DramaWiki) ~~ Adapted from the novel "Mondai Bukken" (問題物件) by Ohkura Takahiro (大倉崇裕).