The interpretative games between reality and fiction are based on a social imaginary that constitutes a society’s symbolic networks and meanings. On the one hand, literature or media stresses a contemporary mythology that comes out from conspiracy figures by perpetuating it through fiction. On the other hand, conspiracy theories and alternative beliefs proliferate in the digital environment, taking advantage of its affordances. Both perspectives carry an imaginary that can transform our perception of reality and induce concrete effects on the collective space. Can their coexistence in the same media environment call into question the values of truth and our capacity to distinguish true from false? What are the mecanisms that create fiction and beliefs? How does the social imaginary located on the boundery of fiction modify our perception of reality and our way to build the contemporary world? These are the questions this paper examines.