Will of fire is your basic naruto plot naruto almost singlehandedly fucks everything up then gives a big speech bringing everyone to his side then uses ass pull jutsu to fix everything last minute.
Where this movie and the series as a whole shines is with the characters. Almost the entire movie revolves around kakashi, naruto, and shikamaru as you learn more about what it means to them to be ninja and protect their loved ones. The plot without spoiling it is pretty bland though the intro is pretty interesting.
Also the animation is pretty good and stays pretty consistent throughout and shows off some cool fights and effects.
All that said it's worth watching as a naruto fan but would be pretty boring if not for that.