The story of Brazil's biggest serial killer, biker Francisco, who was condemned for attacking 23 women and killing ten of them in the 1990s, hiding their bodies in the State Park, in São Paulo. The details of his psycopathy are revealed by Elena, a rookie reporter who perceives the investigation of the maniac's crimes as the big break-through of her career. While Francisco continues at large, skating through the parks and attacking women, his fame explodes in the sensationalist press, creating panic in São Paulo capital.