In the heat of a summer afternoon, a brother and sister find themselves alone, their hormones raging. The brother, unable to resist his sister's allure, corners her in her room. She struggles at first, but her body betrays her, her nipples hardening against her shirt. He pulls her close, grinding his erection against her. She gasps, feeling the heat between her legs. He whispers filthy promises in her ear, his hands roaming her body. She knows it's wrong, but the pleasure is too intense to resist.