Kingdom Hearts II I think I get it now!

After all the asking I think I get it. While I was replaying KHII (I am at Best first visit) I got to thinking. The method to obtain kindom hearts is that the orginization put tons of heartless into different worlds sora goes to the worlds and defeats the heartless then they collect the hearts. think about it. the first part was " put tons of heartless into different worlds". What happens to the worlds THEY GET MESSED UP AND TURN INTO DARKNEES. So I think sora has to stop them because they are messing up the worlds with the methond of obtaining kingdom hearts. So to save all the worlds from getting messed Sora has to beat Xemnas. Is this right?

Also they wan't to go to different worlds to help the folks out.:D

Also the beginnig plot after the talk to Yen Sid was to find king mickey and figure out Organization XIII plans. When they finally find him the plot changes.:D

 

Yeah that's right. They were using Heartless to destroy worlds and harm people just to get their hearts back by Sora destroying those Heartless and who knows what would happen if they got Kingdom Hearts maybe if they get their hearts back it will also bring descrution to the worlds.