Rint, a "tamer" with a low-grade job title, arrives in the royal capital with his partner, the beast demon Kyurke, to make a name for himself. What awaited them on their way to the adventurer's guild was an encounter with Bilena, an S-class female adventurer. Even though they've never met before, Bilena asks Rint to join her party, and what does he do? An adventure story about making a deal with an extraordinary female adventurer and a saint just barely within the bounds of the law!