Leslie has a golden lab named Buddy that is terrorizing her grandson, Mason. Cesar helps Mason get over his fear and shows him all the behaviors that are creating anxiety in Buddy. Meanwhile, Andrea and Erica, who are fed up with their roommate Sarah's dog Mose, decide that it is time to calm him down and show him that Sarah is the leader of the pack.

Cesar's first call comes from Jason, who is struggling to spend time with his twin brother because his German Shepard, Rusty is driving them apart. Then he helps Ivan, who lives with his girlfriend Amber and her sister Ashley and a pack of three Chihuahua's who are disrupting the house and creating anxiety for Ivan. Cesar helps the three dog owners conquer their barking problem by creating boundaries.