Okay. Dream puts people to sleep, and you go into their hearts. Everything in here represents some part of Fire -- memories, the way he thinks, stuff he likes, stuff he hates, stuff that's messing him up, stuff that motivates him, whatever. And the changes you make in here will actually change his heart. Like, if you got into a part that represents "stuff he likes" and, I dunno, painted it pink, he'd probably wake up and love pink. And more serious stuff. The further in you go, the more important the changes'll probably be.