Basically this game is a control battle, if you played and beat kingdom hearts I you may understand the conflicts and st
Now, the last game talks about Ansem and him taking over all the world and consuming them into darkness, Sora (your main characters) from desinty Island gets a dream about the keyblade or whatever and after you get sucked into the portal and going to another world which he doesnt know until he encounters Goofy and Donald (Partners in the game). And every World you go to you get to encounter, Allidan, Tarzan, Peter Pan etc play Kingdom Hearts I. And if you don't have a clue of what i'm saying because you didnt play Kingdom Hearts I, play that first then go on to II its better that why so you dont get some of the cinematics in the game. Its better this way.
Now for you Kingdom Hearts II wanters you may want to know the new battle system things (Spoliers)
You can do Combos (Combining spells and partnership attacks), you can do Overddrives (like FFX specials but more better looking =p) You can weild Two KeyBlades (YES YOU CAN WIELD TWO KEYBLADES REALLY SICK AND FUN TO DO COMBOS).
Now i won't tell you the rest but there new disney characters in teh game, this game is better than part one, way better, this is recommaned to players who likes rpgs and who beaten Kingdom Hearts I.
Fans Who like this.... Wll not put thier ps2 controllers down... Its way to fun.