In the heat of a summer day, a brother and sister find themselves alone, their parents away on business. As the house heats up, so do their desires. She catches him staring at her curves, and he can't help but notice her nipples hardening under her thin top. They play it coy, but the tension is palpable. When she finds him masturbating in his room, she joins him, stripping off her clothes to reveal her toned body. He can't believe his luck as she takes his throbbing cock in her hand, guiding it to her wet pussy. They fuck passionately, their incestuous taboo only heightening their pleasure.