In the heart of a bustling Spanish household, siblings find themselves alone and bored. The sister, enticed by the rhythmic beats of "Los Gallos," begins to masturbate, her fingers dancing over her clit and pussy lips. Her brother, captivated by her moans, joins in, stroking his rigid cock. Their eyes meet, and a spark ignites, leading to a heated argument. Later, they reconcile, masturbating openly in front of each other, their bodies glistening with sweat and desire.