In the dimly lit room, a nurse, Cachabdo, is tasked with administering vaccines. But as she readies her needle, her mind wanders, her eyes lingering on the firm, bare skin of her patient. She imagines the vaccine as a phallic symbol, her hand trembling with lust as she brings the needle to the patient's arm. As she pushes the needle in, she can't help but fantasize about replacing it with another, thicker object.