Kuro's grandfather was called "Black Lightning" by his friends because, long ago, he beat a dragon in a race. One of those friends, an old dog called Grampy, predicts that the dragon will soon return. Hearing this, Kuro decides to take up the challenge!

Takeshi's backpack is filled with snacks. Tama, accompanied by Tora and Pochi, goes chasing after him and his classmates on their class outing. They cross railroad tracks and rivers, facing many dangers... Will Tama and the others ever find the snacks they seek?
Even in the one in a million chance 
he doesn't come, I'll do it.
.حتى وإن حدثت معجزة ولم يظهر، سأفعلها أنا
Auch, wenn er nicht
auftauchen sollte …
Lo haré yo aunque no venga él.
Et même s’il ne vient pas,
je courrai à sa place.
E nella remotissima possibilità
che non venga, lo farò io.
E se por alguma razão ele não vier, eu corro.
Даже если он вдруг
 не придёт, я сам пойду.