Lu Xuanji, an ordinary freshman, accidentally entered a strange "Crazy College". There is only one rule here - survive in the ring. In every arena match, opponents will fall into various unbelievable "crazy states": some people treat physics textbooks as recipes, some people firmly believe that they are a flying fish, and some people treat the arena as a wedding venue. And the most terrifying thing is that the mastermind behind all this is actually a charlatan who calls himself a "saint".
Lu Xuanji awakened the [Crazy Rules] golden finger - he can see through everyone's crazy logic and use these crazy rules to counter the other party. In the academy arena, he defeated his opponents time and time again by "fighting fire with fire", only to discover that the truth about this academy was far more terrifying than he imagined: the so-called "madness" was actually the source of infection by some supernatural power. And that charlatan saint is using this power to turn all students into his puppets.
As the investigation deepened, Lu Xuanji discovered that what the saint really wanted to deal with was an ancient seal hidden underground in the academy. Once the seal is broken, all mankind will fall into eternal madness. And his biological father was the one who sealed this terrible power back then.
Now, Lu Xuanji must defeat the Saint in the ring, find the seal key left by his father, and prevent the end from coming. But the saint has already laid a dragnet, and every arena in the academy may be his last stage.
