In front of Nagoya Station, the mother-in-law of young widow Noriko is found dead in a suitcase. Following seemingly unrelated clues, including her dying words, a postcard from Akitsu village in Fukui, and an eye clinic in Hamamatsu, Noriko reaches a past tragedy and one man. But he has an unbreakable alibi. This novel-length mystery uncovers the truth through her journey.

A journey through scattered memories and final words challenges an unbreakable alibi.