Welcome to the most magnificent pet shop in Chinatown! Operated by the shadowy Count D, the shop specializes in rare and hard to come by pets... but with each sale comes a contract. And if that contract is broken, watch out! Detective Orcott has linked many odd and unexplained deaths to Count D's shop. Will he solve the mystery or fall prey to it?

A genius high school student and also a hacker uses his sophisticated hacking techniques to fights against "Bloody Monday", the worst and most evil form of viral terrorism, in order to save his family, friends, and the entire world.