The siblings, both virgins, struggle with their religious upbringing as they sneak into the closet, their hearts pounding with anticipation. He's a lanky, awkward boy, she a petite, innocent-looking girl. Their hands tremble as they touch, their breaths ragged. She guides his hand to her wet, untouched pussy, and he gasps at her heat. He's hard, painfully so, and she tentatively reaches out to stroke him. They're lost in their exploration, their bodies pressing together, when suddenly, the closet door creaks open, revealing their shocked, disapproving father.