Two devout sisters, cloistered in their nunnery, receive a divine calling - to verify each other's virginity. In the dim light of their shared cell, they tentatively approach one another, guided by their faith and an unspoken understanding. The elder sister, her hands trembling slightly, lifts her younger sister's habit, revealing smooth, unblemished thighs. She gently touches the younger one's sex, finding it damp with anticipation and fear. The younger sister, in turn, explores her sister's body, her fingers tracing the delicate folds of her flesh, seeking the hymen that proves her innocence.