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.
After Grandma hears Stan talking while babysitting the children, she begins to think that she is going crazy, prompting the children to decide whether or not they should share Stan’s secret with Grandma.
To help land an internship with a City Official, Avery agrees to a throw party at her house for the official’s demanding daughter, while keeping it a secret from her parents. Meanwhile, Bennett and Ellen attend a sleepover at the park with Chloe and her Healthy Muffins Troop.
Bennett and Ellen discover Avery's secret online 'Buddy Bop' account. When they try to shut Avery's account down, they accidentally post an embarrassing video. Meanwhile, Stan must face his past and do the tango with Chloe, to win an animal talent show. In the end, Stan loses the talent show to a talking dog.
Stan's former owner, Ian, arrives from Spokane, Washington, to reclaim Stan. He tells Stan he found his original family and they can all talk too. So Stan has to choose between his old family and his new family.