In the dimly lit bedroom, 18-year-old step-siblings Alex and Lily find themselves alone. Alex, hard-pressed from curiosity and arousal, decides to investigate a suspicious bulge in his step-sibling's bed. As he kneels down to get a closer look, his heart races in anticipation of what he might find.
To his shock and horror (or arousal, he can't decide), Alex discovers that Lily is masturbating under the covers. She's gasping and panting, her fingers moving furiously against her soaked panties. Time seems to stand still as they stare at each other in disbelief and lustful embarrassment.
Without thinking, Alex's curiosity gets the better of him, and he reaches out to touch her. His fingertips brush against her bare th ock. In an instant, he realizes his mistake and pulls away, his heart racing. She looks at him, confusion written all over her face, as he quickly makes up an excuse and retreats to the other side of the room.
