The film is a remake of the 1989 “Doraemon” movie of the same name. Nobita and the gang run away from home, travelling back in time to 70,000 years ago, before Japan was even born. After a while, they return to the present. However, when they bump into a young caveman, Kukuru, who they have accidentally transported forward to their current era, they realise they must take him back to the primitive age. On top of that, they will have to save Kukuru’s tribe, called the Hikari tribe, which was attacked and abducted by the Gigazombie and Kurayami tribe.

In the suburbs of Tokyo sometime ago, there lived a clumsy boy about 10 years old. There appeared in front of him a boy named Sewashi, Nobita’s descendant of four generations later from the 22nd century, and Doraemon, a 22nd century cat-type caretaker robot who helps people with its secret gadgets.

Sewashi claims that his family is suffering from the debts Nobita made even to his generation, so in order to change this disastrous future, he brought along Doraemon as Nobita’s caretaker to bring happiness to his future, although Doraemon is not happy about this. And so Sewashi installed an accomplishment program into Doraemon forcing him to take care of Nobita. Unless he makes Nobita happy, Doraemon can no longer go back to the 22nd century. This is how the life of Doraemon and Nobita begins.

Will Doraemon succeed this mission and return to the 22nd century?