Behind the screens, the siblings' breaths quicken as their avatars engage in virtual combat. The condo's intimate setting amplifies their mutual attraction. She, a petite brunette, leans into him, her avatar's clothes leaving little to the imagination. He, tall and muscular, feels his heart race as she playfully pushes him against a virtual wall. Their avatars' actions become more suggestive, their bodies intertwining in ways they've only dared to dream of in this safe, digital space.