Takeshi's friend tells him a rumor about a ghost that wanders, looking for a collar. When he gets home, he finds an old collar there! That night, the ghost of a young girl appears before him, and he learns that the ghost is looking for her dog, Shiro, who she lost during a bombing raid during the war.

Pochi appears in front of Tama wearing a strange, old collar. Pochi seems different than usual, so Tama follows him and ends up in a field he's never seen before. There, Tama learns that Pochi's been possessed by the ghost of a dog named Shiro who'd lost his life in the war.
That must be it! The last 
place that girl and Shiro...
...لا بدّ أنها هي! آخر مكان كانت فيه تلك الفتاة رفقة شيرو
Da muss es sein. Da müssen
das Mädchen und Shiro zuletzt …
Debe estar allí. Es donde Shiro
y la mujer estuvieron por última vez.
C’est sûrement là
que la maîtresse de Shiro est morte.
Deve essere quello! L'ultimo posto
dove quella ragazza e Shiro...
Esse deve ser o último lugar onde
aquela garota e o Shiro estiveram!
Наверное, это там! Место, 
где девочка и Сиро в последний раз...