Yasuo Takano

Mayu Daimon is a woman who does not remember her mother's face, and her father is the only person she has blood relationship in this world, but he is going to die soon. Mayu has just started a new life as a detective at the Criminal Investigation Division which deals mainly with murder cases soon, and has to handle with two corpses of old men continuously. One corpse found frozen buried in the snow and the freezing sea. Soon with a detailed investigation she finds out a connection between the two cases which seemed to be completely different at first glance. It was just the breach to open a history of an incident which had origin back to the 1960s in Aomori Prefecture. Growing more and more as a detective, Mayu has to unravel the mystery of a case which goes beyond time and space and which ends in Hokkaido with a result that no one expected.

大手不動産会社の社員・小町圭と、下町の鉄工場の二代目・小玉健太は、ともに鉄道をこよなく愛する青年同士。よく同じ電車内に乗り合わせるのが縁で知り合った2人は、すっかり意気投合。やがて小町は急に九州支店へ配属されることになり、上司は言いにくそうに転勤の話を伝えるが、小町はこれで九州の列車にいろいろ乗れると、むしろ大喜び。失恋して傷心を癒やすべく九州へやって来た小玉を、小町は早速、列車旅行に連れ出す。