Documentary about the doctor, poet and researcher Luiz Fernando Ferreira, from Oswaldo Cruz Foundation/Fiocruz in Rio de Janeiro. He created Paleoparasitology, science that studies parasites in archaeological material. Amid the atmosphere of knowledge , Luiz Fernando tells his stories, 'some true others not so much,' as he accentuates. Since a young student he deeply admired the wise scientists of Manguinhos/Fiocruz, and chooses the paths of science. In this documentary he tells us about his career and research adventures permeated by an imaginary populated by legends and mythologies.