User blog comment:Kittyfire/Random Topic Blogging!/@comment-3006892-20111113023938/@comment-3006892-20111113025730

Filling in the details. All I got is this:
 * It's Christmas Eve (How cliche)
 * The whole thing will be kind of a parody of "It's a Wonderful Life", except instead of Candace seeing what it would be like if she never existed, it's what everything would be like if Ferb never existed. (If you've never seen that film and therefore don't get it, just ask)
 * Nothing magical/supernatural/spiritual about it, it's a sort of "Reality bender" the boys made.
 * Despite this, Candy still gets a "guide" through this other reality, a holographic somebody who's there "To explain things and make her comfortable".