The consuming passion between Pedro I of Portugal and Ines de Castro is brutally interrupted when Ines is executed, as a consequence of political intrigue and in the name of the kingdom's interests. Pedro, cruelly hurt, pursues the single-minded purpose of avenging his lost love. He captures and kills the executioners, and compels the nobility to acknowledge Ines as his lawful wife and Queen of Portugal.

In an imaginary future, Portugal consists of an association of states - North and South - with zones of specific influence. City under vigilance, Lisbon is inhabited by a repressed and militarized population. Maria and António stand out in this city and surrender themselves to a submersive love. 1978