Blythe and the pets compete in the Carnival parade in Rio, but an old nemesis shows up as well, determined to defeat them.
Blythe finally makes it to the Pet Expo, but the Biskits sabotage her at every turn, making her think her nightmares about everything going wrong at IPFE might actually be coming true!
Blythe is majorly stressing about the upcoming International Pet Fashion Expo and her concerns increase dramatically when she's asked to do a photo shoot for top fashion magazine, Tres Blasé.
Pepper feeds Blythe jokes at a standup comedy contest, while the other pets concoct an elaborate plan to make Minka believe that she really is the first monkey to land on Mars.
Both Russell and Blythe find themselves in isolation due to real, but mostly imagined circumstances.
When Sunil and Vinnie have a falling out, it's up to Blythe and Russell to figure out how to get these two best pals back together again.
Bigfoot fanatic Roger Baxter buys a camper trailer and takes Blythe and the pets on a camping trip.
Blythe, intent on bringing back the school's former and superior bottled water, runs for class president against The Biskits while the pets suffer escalating annoyance from a mysterious droning buzz emanating from somewhere in the shop.
When Roger is temporarily laid off, he takes a job as the Biskit twins' personal assistant and chauffeur, much to Blythe's dismay. Meanwhile, the DNA test results on two of the pets temporarily turn the day camp upside down.
When Blythe and the pets travel to Shanghai to attend a ceremony honoring Mrs. Twombly as originator of Kung Fu Quilting, Penny Ling finds herself reunited with family she never knew she had. After sharing an awkward meal with them on the night of Mrs. T.'s ceremony, Penny Ling comes to realize that Blythe, Mrs. T. and the pets are also family.
Pepper is smitten with a visitor to the day camp, but has no idea how to express herself around him and Blythe has her hands full babysitting Buttercream while trying to finish reading a new book.
Penny Ling convinces Sunil that he has super powers to give him confidence, while Blythe helps find the perfect parking spot for the Sweet Delights truck.
Blythe fills in for Zoe's owners and accompanies her to a dog show in Paris and soon both are smitten; Blythe with Paris and Zoe with a handsome miming street dog named Phillippe.
When the pets share their "most interesting stories," Penny Ling invents a fascinating tale where she saves "the Green Bean Fairies" by confronting "the Crab Witch."
Business is slow at the Littlest Pet Shop so Mrs. Twombly agrees to let Blythe and her friends shoot a TV commercial.
Blythe trades in her beloved scooter for a sales kiosk so she can enter the International Pet Fashion Expo. Meanwhile, Roger's airline launches a "Pet Jet" service and the pets use it to launch one of their biggest fantasies yet.
Blythe lives in the big city, right above the Littlest Pet Shop, a day-camp for all types of pets. When she discovers she can talk to the animals, it's the beginning of music-filled, zany adventures with her new four-legged friends.
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