Zeno: Kagirinaki Ai ni is a movie about life and work of Brother Zenon Żebrowski, a Polish missionary in Japan. Brother Zenon was known for his charity work for victims of war and the poor in Japan.

Miyuki receives an invitation from her friend Hikune Youhei to the themed inn called "Ruins", located in a virtual ghost town haunted by the legend of a vampire. However, what Kindaichi had originally dismissed as spooky rumours with no basis became horribly real when their fellow guests staying at the inn are found dead one by one, with their bodies drained of blood and wounds in their necks that resembled vampire bites