"If they're in the world," says Serah blankly.

"That's the rest of it," sighs Isabella. "I got the magic from another world. There are many, and I've been to several. It used to be that anyone who knew how to ask could go to any world they liked, any time - but the machine that used to do that has broken. Nathaniel was visiting another world at the time, and he can't come home until the machine is fixed."

"I thought you said your magic could do anything."

"Almost," says Isabella. "Only almost."