Locked away in the attic, the siblings find solace in each other's company, their bond deepening as they share secrets and dreams. But as they grow older, their feelings shift, becoming something more intense, more intimate. One afternoon, as they sit close together, their thighs touching, she feels a warmth spreading between her legs. She looks at him, her eyes wide with a new understanding. He swallows hard, his gaze flicking to her heaving chest, her parted lips. Their breaths sync, and they lean in, their first kiss a spark igniting a fire that will consume them both.