Chloe works as an apprentice priestess at a remote church, but she uses her insight and memory to earn money at night by gambling at cards in a bar, which is hardly suitable for a clergyman. One day, Erald, a wealthy paladin, visits Chloe's church, so impressed by her abilities that he offers her a job.

"I want you to pretend to be a candidate for the saintess, and infiltrate the grand cathedral to find the murderer who committed the crime two years ago."

Drawn by the large reward, Chloe signs a contract with Erald. She is supposed to investigate the murder of an apothecary that took place inside the main church two years ago, but what is the truth hidden behind the scenes?

(Source: Arian Rose, translated)