A high school student and genius hacker, Takagi Fujimaru, a.k.a. “Falcon”, uses his sophisticated hacking techniques to indict the fraudulent acts of evil villains. In order to save his family, friends, and the entire world, he fights against “Bloody Monday”, the worst and most evil form of viral terrorism. As spies of the terrorist institution infiltrate into schools and police organizations, and the terrorist threat grows through a chain of treacherous acts, how will Falcon outsmart them in their intellectual battles? (Source: TBS)