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...
I wonder if Emi-chan is in 
this building somewhere.
أتساءل ما إن كانت إيمي-تشان
.في مكان ما في هذا المبنى
Ob Emi irgendwo da drinnen ist?
Emi seguramente estará en el edificio.
Emi seguramente estará en el edificio.
Je me demande si Emi
se trouve dans ce bâtiment.
Chissà se Emi è da qualche parte
in questo edificio.
Será que a Emi-chan está em
algum lugar desta construção?
Интересно, Эми тоже
где-то в этом здании?