Two-year-old Carlee quickly learns that being cute will only get you so far in the family. Meanwhile, boisterous Riley pushes his group's patience to the brink with his constant hijinks, and the veterinary staff race to move the rest of Slim's group to a new state-of-the-art corral. A newcomer Midge arrives in search of a new family and a forever home, but will he make new friends?

As Nina celebrates a special birthday, her mischievous son Riley threatens to wreck the party. Alpha Sparky and his family prepare to move into a larger community, but only if he can overcome a debilitating injury. In Sara Soda's family, Carlee's big sister Arden tries to force her way up the political ladder – but has she pushed too far?