In the confines of their shared bedroom, two siblings, both untouched and curious, explore their forbidden desires. The brother, a strapping young man, lies on his bed, tenting the blanket with his stiffening cock. His sister, a petite virgin, enters, her eyes drawn to the bulge. She tentatively touches it, feeling its heat through the fabric. He grunts, pushing his hips forward, encouraging her to continue. She tentatively pulls down his boxers, revealing his throbbing cock. She licks her lips, her pussy dampening at the sight. She takes him in her mouth, her inexperience making her clumsy but eager.