Top-level espionage: exchanging stepsisters after peeping

Scarlett thinks her stepbrother is stealing her panties and doing dirty things with them, so she installs a hidden camera. But her brother gets access to the feed, and one day he sees Ginger, his sister's friend, undressing and flashing her tits on camera. He jerks off and gets caught red-handed, and Ginger's stepbrother comes over to deal with him. In the end, the guys decide to settle everything peacefully: they have a group sex party with their stepsisters.