The story of a naive young man, provincial and not very experienced, to whom the circumstances of destiny, when crossing with the beautiful Frida, lead him to mature with a single blow. Rodolfo helps Frida in a car accident while she orders him to deliver an envelope. There begins the desperate flight of this innocent man fighting for his life, persecuted by thugs -who want to recover the contents of the envelope- and by the police -who seeks him for being a suspect in the death of an important diplomat..