Enter: Naruto Uzumaki!

"Enter: Naruto Uzumaki!" is the first episode of the original Naruto series

Synopsis
Twelve years ago, there was once an evil monster known as the Nine-Tailed Demon Fox. It one day attacked the village of Konoha and killed many innocent people that night. None of the ninjas of Konoha could stop it, so the village leader, the 4th Hokage, cast a jutsu on the Nine-Tails that sealed it in a newborn boy and cost the Fourth Hokage's life.