Fear is a natural reaction of individuals when facing threaten; some people choose to avoid, however, some others regard conquer the dangerous as entertainment. Thus, the horror fictions are resulted accordingly. The Tenants Downstairs is a local thriller novel which recognized by readers, directors, and academic commentators in Taiwan. Founded on this popular novel, this paper aims to discuss what characteristics of the youth in Taiwan correspond to the text, moreover, to explore the attitude toward body and life of network generation through their daily fear, and further to discover the deeper dimensions, which are radiated from the novel, of Taiwanese network generation. According to the context and connotation of The Tenants Downstairs, it could be observed that narcissistic personality and multiple faces among a part of young urban survivors, with behavior as curiosity about others, sneak, apathy, exclusivity, as well as a large number of corpses, death and violence lead readers re-thinking their perceptiveness about the value of life for network generation. Through the thriller people, events, and surroundings, horror fictions induce individuals be aware of their own vulnerability and strengthen alertness, meanwhile, guide people to realize that true horror is not the monsters hidden in around but come from inner-self.