Max, the adorable terrier, has been living a pretty quiet life since his owner, Katie, got married and adopted a new family member: a little boy named Liam. However, Max's life takes an unexpected turn when Liam enters childhood, and Max feels the need to protect him at all costs. With his overprotective dog instincts in full swing, Max faces new challenges, from the bustling world of playgrounds to the child's antics, resulting in a never-ending series of hilarious situations.
Meanwhile, his friend Gidget, the fluffy white dog, embarks on a rescue mission to retrieve Max's favorite toy, while the brave rabbit, Snowball, becomes a high-flying superhero as he tries to save a puppy trapped in a dangerous situation. All these characters intertwine in a whirlwind of adventures, filled with humor and, of course, plenty of sweetness.
As the animals try to balance their lives in a human world, they also explore loyalty, friendship, and courage, discovering that, at the end of the day, what matters most is the unconditional love they feel for their owners and for each other. Through laughter and touching moments, this movie reminds us that behind closed doors, animals have their own stories to tell.