The story line is brilliant, and pretty much the same story line as Spy Kids 3 Game Over, but comes with a little bit extra, which is great and makes the plot better. This anime is amazing as it keeping you on the edge of your seat and leaves you guess whats going to happen next, however there are a few scenes where you know whats going to happen, but there very few. Sword Art Online has everything you would expect from an 'all rounder' anime, such as love, action and even a bit of comedy. Personally, I have never completed a whole anime in one day, until I watched Sword Art Online, which made every moment unmissable.
Hope this review helps :D
