Halley's Tail

Doraemon and Nobita organize the storeroom in the garden with their dad and mom. Then, a volume (maki) thing that is handed down from generation to generation comes out from my dad's grandfather. When I opened it up, it was written that my grandfather, Nobikichi, was caught up in a disaster from heaven, but managed to survive. Furthermore, when the disaster from heaven came again, it was written that it should be dug under the persimmon tree, but it is said that it should never be dug until the day comes.

　Nobita can't help but wonder what's buried and what kind of disaster will come. So Doraemon took out "Time TV" and decided to take a look at Nobikichi's burying something in the garden a week ago. Then, a boy who seems to be Nobiyoshi was surprised because he was about to suffer with his face on the tub filled with water!

　The two in a hurry head for that era about 100 years ago with "Time Machine". Then, when I heard from the teacher at school that "Harry is coming soon and the air will temporarily disappear from the ground," Nobikichi found out that he was practicing to hold his breath ...!??