The siblings' religious upbringing hasn't squelched their natural desires, but it has given them a guilty conscience. As they huddle together in the dark closet, their bodies betray them, pressing close, breaths ragged. The sister's hand trembles as she reaches for her brother's cock, feeling its heat and hardness through the fabric. She looks up at him, her eyes filled with longing and fear, as she slowly unzips his pants, revealing the object of her taboo desire.