After bringing a fossilized egg back to life with the Time Cloth, Nobita finds himself the owner of a baby dinosaur. Everything is fine until it grows up. Nobita and friends use Doraemon's time ...

Nobita hatches an egg of Futabasaurus that is a genus of Plesiosaurs flourishing during the Cretaceous in Japan, named it "Piisuke". As Nobita, with getting a help of Doraemon and three friends, tries ...