Oh, those devious deviants! Talia Monet and Anastasia Pierce are sisters and Mistresses-In-Training, who have been seeing a few clients on the side in an attempt to build their own clientele to the detriment of Mistress Evolin Pierce, who trained them. Ungrateful sluts that they are, they sit and cackle about how the Mistress is old and doesn't know much anyhow. Little do they know that their Mistress still has a few tricks up her sleeve and is fully aware of their treachery. In fact, she set up the whole darn thing! Ooooh, she's crafty.
Of course, these two backstabbing bitches simply must be punished, and Mistress Evolin wastes no time taking them to task. While the punishment seems a bit light for the offense, there's quite a bit of nice struggling to watch from both Talia and Anastasia after they've been bound and gagged. The intensity ratchets up quite a bit with the application of a large number of clips to the sensitive bits of one slave, and some of them are removed in a particularly stinging fashion.
This effort lacks slightly due to a "dungeon" that is quite clearly a single small room and the extensive usage of certain restraints that most Dom/mes would scoff at, but they get a solid B for effort.