The series revolves around an earless robotic cat named Doraemon, who travels back in time from the 22nd century to aid a boy named Nobita Nobi.
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 ...