Austin Pierce, the ever-attentive stepbro, finds Kitty Lynn, his petite and busty stepsis, lost in her thoughts and slowly touching herself. He's been there for her since her breakup, and today, he decides to be there for her in a whole new way. Watching her from the doorway, he sees her small tits heaving, her tiny hand rubbing her pussy. He can't help but grow hard. Kitty, lost in her lust, doesn't notice him until he's right behind her, his massive cock pressing against her ass. They hesitate, then give in to their forbidden desires, fucking in every position, from missionary to cowgirl, doggystyle to POV, until they're both spent and satisfied.