After moving into an apartment, Blythe Baxter gains the ability to communicate with animals after falling in a dumbwaiter. There, she meets a group of pets who reside in a day camp area of a pet shop, who enlist her help when the store is on the verge of running out of business.
In the second part, Blythe hosts an animal fashion show featuring the pets in order to drive revenue to the pet shop. Meanwhile, the Biskit twins Brittany and Whittany plan to stop Blythe by embarrassing her during the climax of her show.
Blythe stumbles to fix a botched haircut on Zoe, while the other pets urge Minka to purse the life of an art superstar, and get out of hand when they overestimate her artistic endurance.
Blythe uses the pets as diversions in order to rescue Zoe's sister from inside Largest Ever Pet Shop, an expansive pet store retail chain owned by the Biskit twins' father, Fisher Biskit.
Blythe earns the gratitude of the Biskit twins after defending them against a bully during gym, but ends up being forced from talking her other friends. Meanwhile, Pepper is inspired to use insult comedy as part of her stand-up comedy schtick, but takes it too far on Penny while being unaware of her sensitive feelings.
Blythe rejects the notion of her dad going on a date to a charity ball, while Penny Ling struggles to voice her disapproval of an outfit Blythe designs for her to wear at the ball along with the rest of the pets.
Suspecting that he has become too serious for his own good, Russell loosens up by creating an alter ego, dubbed "Fun Russell". Meanwhile, Blythe finds her friend Sue mimicking every aspect of her personality unsettling.
Blythe stumbles upon some keys belonging to her crush, Josh Sharp, and goes searching for him using Sunil's precognition. When he assumes she has gotten lost due to his own lack of faith in his psychic abilities, he enlists the help of his friends, along with larger-than-life parrot Esteban Banderas.
While on her way to meet with her friends at a flash mob, Blythe gets trapped in the dumbwaiter along with Zoe, Pepper and Minka. While Penny Ling tries to attract the attention of the boys to get them out from the dumbwaiter, Zoe and Pepper start to fight, and within their compact space, Minka's claustrophobia is triggered.
Blythe attempts to be the peacekeeper between Zoe and her old rival Madame Pom when arrives at day camp, all the while Penny Ling and Vinnie nearly destroy the shop while practicing for their new group dance routine. Likewise, Mrs. Twombly goes on a rampage in search of her favorite cleaning spray.