This OVA has been made as a extra for the naruto ultimate ninja 3 game, so of course it don't have a plot, the rest you have to play it. If you watch this OVA and then play the game, then you will say that its a great job, the game its like an RPG and fight game put together. About the OVA, well its an OVA, those who say that it dont have a plot, it dont go across the main story, well... you should think about what you say, and learn what an OVA is, if not, then dont even care in whatching