As the clock strikes midnight, Luna Mills, the naughty step-sister, can't resist her carnal desires any longer. She silently tiptoes into her stepbrother's room, finding him asleep. Luna, with her luscious curves and big tits, gently straddles him, guiding his hardening cock into her warm, wet pussy. She rides him slowly, her curvy body undulating in the moonlight, until he wakes up to the sensation. Startled, he tries to push her off, but Luna's insistent moans and the tight grip of her vaginal muscles keep him trapped. She leans in, whispering, "Don't you dare cum inside me," before increasing her pace, chasing her orgasm.