Bruno creates electronic music with his friend Noël. Music is all Bruno cares about; he listens to it, records it and composes it.
Just when he’s on the brink of signing with a producer, he falls in love with a voice he listens to over a telephone dating network. The voice belongs to Lisa. Bruno and Lisa meet and make love several times in the darkness of a hotel room. Lisa then suddenly disappears.
Obsessed with this fleeting encounter, Bruno sets off in search of this woman of whom only a few recorded elements remain: sighs, murmurings, fragments of sentences. With these fragments, that are so many markers in their brief relationship, he tries to compose a piece of music that will sublimate this impossible love. At the end of a nocturnal and musical adventure dotted with strange and troubling characters, Bruno finally manages to record his disc.