Doraemon, Nobita's Counterattack

Japan in the 21st century there is a irresponsible pre-teen boy named Nobita Nobi, who is always bullied by his classmates Giant and Fox. Besides, and he participated in the exam get 0 is a very common thing. Because of that, Doraemon travels back in time from the 22nd century to aid him. After they lived together a long period of time that they all become very good friends.

But is this really the case?
Is it that the intention of Doraemon is just so?

One day, a mysterious man who from the future appeared in their world and claimed to destroy Doraemon. During negotiations the answer of the secret gradually emerge. Meanwhile, Nobita and others fully demonstrated the friendship between them to fight against the enemies for save doraemon at this critical time.