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Avery Jennings and Tyler James are step-siblings who are complete opposites. The family faces an even bigger adjustment when their new dog, Stan, can talk and also has a blog, unbeknownst to the family. Stan uses his blog to discuss the happenings in the Jennings-James household. Avery and Tyler later learn of Stan's talking ability and agree to keep it a secret from their parents.
On Avery's first day of high school, Tyler ropes her into his senior prank that ultimately gets them both expelled.
When Ellen and Bennett overhear Stan talking, the kids go to great lengths to convince their parents the house is haunted to help keep Stan's secret.
When Tyler is invited to join a professional freestyle BMX team, he enlists Avery as a tutor to try and help him graduate early.
Stan has a crush on the new neighborhood dog, Princess, but he has to figure out how to get past her owner, who is a pretentious schoolmate of Avery's.
Though Avery 's assignments are perfectly executed, she misses the true point in her life skills class and receives a disappointing grade.
In an effort to teach the James-Jennings kids the true meaning behind Christmas, Stan hides all of the holiday presents from the family, ultimately teaching them a greater lesson about giving back to others.
Avery's feelings are hurt when she realizes Max doesn't like her designs. Meanwhile, Stan gets a makeover to impress his new girlfriend.
Avery becomes worried when she has a recurring dream that she and Karl are boyfriend and girlfriend. Meanwhile, Chloe wants to give up choir to become a BMX bike rider like Tyler.
Stan enters a fashion show wearing one of Avery's designs. Meanwhile, Tyler takes an unforeseen trip.
Avery, and her best friends, Max and Lindsay, all discover they're dating the same guy. Meanwhile, Tyler is accused of cheating and must prove his innocence.
Avery becomes jealous when Stan spends the night at Karl's house. Meanwhile, Bennett gets Chloe hooked on wrestling.
The kids turn to Bennett for psychological advice when Stan starts talking in his sleep.
To help fund Stan's nuptials, the family submits the wedding to the "Wackie Jackie" show, a program in which wealthy teen spends money to amuse herself.
Avery is the only one running for President; she convinces Max to run against her so that she has some competition.
Princess is pregnant with puppies; Stan is both nervous and thrilled about becoming a dad.
Tyler, Avery and Chloe decide to keep the puppies.
Avery and Chloe get into a fight after Chloe discovers that Avery is using her to get closer to a boy she likes.
Avery, Tyler and Chloe discover that Gracie and Freddy can talk, just like their dad Stan.
Max starts to date Karl, but when they break up, Avery and Lindsay try to get them back together.
When Avery’s latest design gets ruined before a big fashion show, she must get to the bottom of who destroyed the dress.
