In a dimly lit room, a brother and sister, both virgins, stand awkwardly as their father demands a test of their purity. The brother, nervous yet curious, watches as his sister, clad in a simple white dress, is ordered to strip. She hesitates, cheeks flushed, but complies, revealing her untouched body. The brother's eyes widen, his cock stirring at the sight. The father hands them a camera, instructing them to record their verification. The sister, trembling, spreads her legs, showing her pristine pussy. The brother, now fully erect, struggles to maintain composure as he films, his heart pounding with a mix of guilt and desire.