At the play's opening night, Pablo meets Antonio, a young man who has been obsessed with the director since he watched the gay theme film "The Paradigms of the Mussel". At the end of the evening they go home together and have sex. For Antonio this is his first homosexual experience, while Pablo considers it just a lusty episode. Pablo is still in love with his long-time lover Juan. Antonio misunderstands Pablo's intentions and takes their encounter as a relationship. He soon reveals his possessive behavior as a lover.