A medieval alchemist (Klaus Kinski), knight (Harvey Keitel) and priest (Fernando Rey) mistake a flying-saucer alien for a dragon.

Juan Jose Moreno Cuenca, alias the Heifer, is 23 years old and tells his story as a criminal offender from 1 Ocaña Toledo. Fatherless, the offender has his childhood and how everything changed when her mother went to prison.