Welcome to District 3, where a lot of cats and dogs live. Tama goes missing, and his friends try to find him. A new dog moves in to the neighborhood, but he looks really tough. Meanwhile, the cats try to find their warm paradise.
Bull tries his best to be cool, but then he meets Momo. Gon teaches Kuro something interesting about cats and dogs. Tama and Pochi get lost again and end up at the beach.
Koma and Tora argue about who the strongest person on Third Street is, so they hold a tournament. But because of this tournament, a certain someone feels like he was the weakest guy on Third Street.
What does Tama do all day while the other cats and dogs are working? Gon has a one One Dog Show where he can never get bored. And Kuro patrols Third Street to protect the peace.