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's why I've taken this perfect body, 
the body of the one you call Pochi.
.لهذا اتّخذت هذا الجسد المثاليّ، جسد ذاك الذي تدعوه بوتشي
Da dieser Körper perfekt war, habe ich
ihn mir von deinem Freund Pochi genommen.
Por eso escogí un cuerpo adecuado,
ese al que llamas Pochi.
Alors j’ai récupéré le corps
de celui que tu appelles Pochi.
Ecco perché ho preso questo corpo perfetto,
il corpo di quello che tu chiami Pochi.
É por isso que peguei este corpo perfeito,
o corpo daquele que você chama de Pochi.
Поэтому я занял это отличное тело,
тело твоего Поти.