Hidden in a cramped closet, these siblings maintain their virtue by not moving, but their bodies betray them. The sister's innate lubrication soaks her brother's shaft as she rubs her tight, untouched vagina along it. Guilt-ridden, they try to resist, but lust takes over. They collapse into a post-coital mix of remorse and shame, their taboo lust leaving them praying for absolution amidst smeared juices and spent fluids.