Wei Ran, a college graduate, was brought into a world he never thought existed by a cat. When he was trying to find a way to go home, he learned that the only train that could take him back to the human world only runs once every six months. He had no choice but to temporarily live in the store run by the cat Ya Ya - Strange Stories. Just when life seemed to be getting stable, Wei Ran unexpectedly discovered that no matter where he went, dragon scales would appear there. And every time a dragon scale appeared, it caused a completely different strange effect...