Maddie and Leila visit Tina and Ruth, and much milking ensues. Cassie makes a wager and wins it, involving some public sex and a new permanent nudist. The petplay ladies gather at Jenny's home for a lesbian orgy, but they get gate-crashed by the man she and Hoshi met at the BDSM club, toting a gun and threatening blackmail and rape. Madelyn hatches a desperate plan that leads her to a kind of enlightenment.

Tina and Ruth bond, while Hoshi and Kara ponder petdom while visiting Jenny and Allie, who are making plans for a petgirl orgy. Dana freaks out after returning to her human form and flees with Miguel, while Cassie humbles herself to Maddie in exchange for borrowing the device. None of them realize that fourth level traits happen automatically, and Maddie gets a new kink while she sleeps.

Allie accidentally lets slip that she and Jenny are related around Hoshi, which causes some strain on their sexy times. Tina starts thinking about ways to monetize her milk, but Maddie has her own plans for the would-be dominant woman involving their adult baby Ruth. Cassie and her friends finally ambush Leila and Maddie afterwards, but it doesn't work out exactly as planned. Instead, Dana and Miguel get zapped again; he gets magical sexual endurance, and she gets turned into a weredog...

Tina has her date with Allie and spreads the milk. Dana gets the heat again, and Allie happily succumbs to it when she visits after escort duties. Maddie and Leila play house with adult baby Ruth. Jenny and Hoshi visit a 'pet-friendly' BDSM club but find it isn't quite what they're looking for. Kara edges toward cowdom, in a behavioral sense.

Many of the characters come to decision points about where they want their lives to lead. Cassie tries to explain the device to Miguel and Dana, recruiting them against Leila, but before the confrontation can happen she winds up fucking a teammate. Maddie has a taste of public humiliation, but it helps her come to terms with her mental dilemma, and she devises a plan.

Cassie trades sex for info with Allie, while Miguel and Dana discuss their mutual roommate issues and have loud sex. Baby Ruth visits Maddie and Leila at the nudist campground and endears herself somewhat to her new Mommies. Jenny and Hoshi have a falling-out with their Owners, and AllieCat convinces Katrina to become KittyKat for a livestream petplay.

Maddie and Leila learn some disturbing facts about the recently infantilized Ruth, and Dana winds up seducing her roommates but the morning after regret and recriminations are severe. Meanwhile, Jenny decides to top Allie for her daughter's cam career, and later seduces a coworker into bovine petplay at the office.

Maddie starts to realize that some traits seem contagious. Tina gets zapped again, making her lactation spreadable as well. Maddie and Leila decide to ditch school for a few days to figure things out, but a new function of the device reveals itself, and Leila winds up zapping an old bully of theirs, who they chance to meet on their mini-vacation. Meanwhile, Cassie starts putting the pieces together, but wrongly, while Dana and Miguel have issues at home thanks to their new nudism.