On the last day of summer vacation, Nobita finds a mysterious ocarina that summons a whale named Gony, who responds to a unique 52-hertz sound. Traveling back 7,000 years, Nobita, Doraemon, and ...

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.