The series (alongside the original Naruto anime) started off okay. You see a flash-forward of a reunion with Sasuke. And then the action picks up.
There are about, in all, ten filler arcs altogether. I do include the Shinobi War Arc with this, as quite a lot of the episodes were filler.
The show, for me, got considerably worse after the Kage Summit Arc. After this, is presumably where the ...