In the confines of their cramped home, a curious sister and brother, both 18, tiptoe around their mutual attraction. One evening, after a heated argument, they find themselves alone and vulnerable. The sister, emboldened by her newfound desires, initiates a tentative exploration of their bodies, her brother's cock hardening at her touch. They tentatively kiss, their hands roaming each other's virgin flesh, before their fear of discovery forces them to retreat.