In Dragon Ball Z: Infinite World, you will play as Goku and head through a massive map fighting foes and playing minigames. You'll earn Zeni (which is the currency that you'll use in the game as you go to gain special weapons, skills, and more in the Warrior's Room Shop. During the game itself, the story line will unfold as you go, and there will be short mini-cartoons that will help to explain the story and what you are heading toward. These are normally before and then after the bosses that you'll go up against, and if you aren't a fan of the show, then you will want to pay attention to them closely or you're going to be totally lost in the game. But, truthfully, if you haven't ever watched the show or know anything about it at all - you're already going to be majorly lost when it comes to the story line.
The story line in Dragon Ball Z: Infinite World is one of the major downfalls of the game in my opinion because it's just downright hard to follow and understand - even for those that love the show. For this part of the game, I'm giving it a 2 out of 5 just because anyone not a huge fan of the show is going to be hopelessly lost here.