It used to be on fanfiction.net however it's been removed for a long time. Naruto was taken(I think) from Konoha by Iwa nins under the orders of Iwa's Kage who happened to be her uncle. I remember that the Uchiha and Hyuuga wound up switching sides after hearing about
- SPOILER - Show Spoiler
the council's decision to eliminate the Uchiha
Also there were a couple of time skips until the usual chuunin exams. Additionally, the story was quite long I think it was well over 100k words.