Morzsa is deep cleaning his house and goes shopping. Rókica wants to play a prank on the old dog and recruits Buksi. Only the two of them think the joke is funny and they believe that no one has guessed their secret.
Buksi plays with everything he can get his hands on, not caring that he is causing trouble for others. He tries to right his wrongs, but seriously upsets Cicamica.
As Morzsa is preparing to renovate his home, he puts his couch in the yard. Buksi and Rókica are excited by the furniture fit for jumping. Their fun doesn't last long as a spring tears the cover.
Rókica is constantly showing off his newest toys to Buksi. Cicamica and Morzsa want to see Buksi happy, but they find it hard to compete with this boasting. But sometimes even a braggart can find herself alone.
Morzsa has guests: his old friend Kristóf Boxer and his son Bagó. Cicamica is looking forward to Buksi getting a playmate. But he finds it hard to tolerate a playmate smaller than he as he finds other friends in the at the same time.
Adults cannot pay attention to a bored Buksi, so the puppy digs holes, causing damage. Luckily for him, Sompolyogi is visited by his niece at the same time.
Cicamica asks Morzsa to teach Buksi how to guard the house. The puppy takes his lessons so seriously that he amazes his master and even protects him from trouble in the neighborhood.
Morzsa is practicing the scouting run with Buksi. But the smell of sausages cooking at the Sompolyogi's distracts the puppy and he thinks he will be given a treat after the exercise.
Residents of Futrinka Street wake up to a rainy day. Yet their biggest problem is not the weather, but the appearance of a stray puppy. Who is supposed to take in the shivering creature?
Morzsa goes for a walk with Buksi, hoping that the bored puppy will stop causing damage. But on the way, he fails to control him which has serious consequences. Cicamica hopes that eventually Buksi will learn to listen to kind words.
Buksi disturbs the peace and quiet of the residents of Futrinka Street with his barking. For once, even Cicamica can't tell when a dog should bark. Morzsa takes the puppy under his wing.
Nyúl's hats are in danger and he asks the experienced guard dog for help. Instead of Morzsa, Buksi takes on the task, but danger comes in an unexpected way.