In the confines of their shared bedroom, a brother and sister find solace in secret, shameful pleasures. They sneak glances at each other while masturbating, their guilt-ridden desires building. One evening, they finally act on their urges, their bodies entwined as they explore each other's forbidden zones. But their newfound passion is tainted by religious guilt, and they're left to grapple with the consequences of their sinful actions.