A girl nicknamed "Paingy" invites Tama and Takeshi on a treasure hunt. For some reason, there's a cat that looks like Tama on the treasure map. But all of it is a plan put in place so that Paingy can tell Takeshi something important.

Takeshi is staying home from school because of a fever. Before he knows it, he's hanging out with Tama and the others. The sights and experiences of Third Street from the perspective of cats and dogs is vastly different from what he knows...
As an apology, I'll take you to 
Third Street Elementary School.
سآخذكم جميعًا إلى مدرسة
.الشارع الثالث الابتدائية كاعتذار
Ich hab’s! Als Wiedergutmachung
nehm ich euch in die Grundschule mit!
¡Ya sé! ¡Los compensaré
llevándolos a la escuela!
¡Ya sé! ¡Os compensaré
llevándolos a la escuela!
Pour me faire pardonner,
je vous montrerai l’école du 3e !
Per scusarmi, vi porterò
alla scuola elementare della terza strada.
Já sei! Para me desculpar vou levá-los até a
escola de ensino fundamental do Distrito 3.
Давайте я отведу вас в начальную
школу в знак извинений.