Confined in a cramped closet, a brother and sister struggle with their religious upbringing and burgeoning desires. Michelle, overcome with lust, gently pushes her brother's massive cock inside her. They move slowly, haunted by guilt, as they attempt to maintain their virtue. Their bodies betray them, however, as innate lubrication soaks their sibling's shafts. They collapse into post-coital remorse, praying for forgiveness from their taboo lust.