All slaves and administrators bitten by the dogs in the mine died, not leaving one. Van, who survived alone, finds a slave's daughter and names her Yuna, and then leaves the mine.

Around that time, a doctor called Hossal was investigating a mysterious disease called "Black Dogs Diseases (Mitthal)", caused by a bite from a dog that kills people. When he visited the Akafa mine and found out that Van survived from the diseases, he started to follow after him to take a pathogen in Van's body.

Van and Yuna, who survived the war and lived a lonesome life by herself, start a tough but happy life together. Hossal fights against the diseases that led to the end of his ancestors. How will the faith of these two lead each other?

A fantasy of war and medicine told by Nahoko Uehashi, well known for "The Beast Player" and "The Guardian Series".