You and your step sister have been cooped up inside for too long and the sexual tension has become nearly unbearable. Your sis has noticed that you've been hovering around by her bedroom door and then disappearing into the bathroom multiple times a day and so she's made a game of turning up her sex appeal and flashing her goods in the skimpiest of outfits, enjoying how wound up it's making you. Finally, she confronts you and confesses, admitting how horny she is, too, and how bad she needs you.