Deep in the heart of Madrid, meet Rellenita, a Spanish prostitute who's seen it all. Her sultry eyes and curves entice clients from all walks of life. Tonight, she's in a dimly lit room, her red lips wrapped around a client's throbbing cock, her moans muffled by his thickness. She's a master of her craft, but as the night wears on, she reveals glimpses of her own desires and regrets.