Mistress Iside had given her slave firm and clear instructions but he ignored them all and he did what she did not think he should have done. And when she realized that he had done so, she could not let him get away with it. So she rained heavy and hard slaps on him. That is how he learned that he had to change his ways and learn to take and adhere to instructions.
Mistress Iside and her colleague caught this snitch and they wanted more info on the things he had been doing. The mistresses made sure that he learned his lesson the hard way and that is why they stripped him naked, tied him up and when they were done, they slapped the shit out of him and made sure he felt the pain and humiliation he needed to feel. He confessed everything to them.
Mistress Iside felt like punishing her slave as she did periodically. She felt it was a better use of her punishment power than to do it every other day whenever he messed up. Instead, she documented the punishments and then gave out one punishment. Today she stripped him naked and she tied him up then she slapped the crap out of him. He felt it in every part of his body.