Naruto was a baby of Konoha's ninjas who dead during the attack against Kyubi.

Kyubi was a demon with nine tails who destructed all in his passage and killed many people.

He was very powerful but one day the Okage (the head of the village) decided not to kill him because it was to dificult but to lock up into a baby who will get Kyubi in him all through his life.

This baby was Naruto because he had lost both his parents and they hate the demon and they would accept that their baby served and save the village.

In the begining of the story Naruto was a teen and he wanted to become a ninja and he is a buly in his academy.