This is an off-beat, fast-paced, and well-wrought love story involving two very different people: Lucia (Assumpta Serna) is a computer operator whose sexual inclinations are alternately normal and kinky, and Arturo (Xabier Elorriaga) is a company representative from another town, with a wife and young child. After Lucia and Arturo meet, they start an affair that eventually takes on enough meaning for Arturo to split from his wife. In the meantime, Lucia is indulging her sado-masochistic tendencies on the side with at least one other partner -- knowing that if Arturo finds out, their relationship may be over.