Slice of Life
In school, everypony learns about the official history of Equestria, the acts of heroes and villains that made the world what it is today. But at home, everypony learns another, secret history, about how their family and theirs alone is at the center of Equestria's history, and how without them, the world will fall apart. This Hearth's Warming Eve, Twilight Sparkle and their friends will share their secret histories, and in this way discover that the bonds between them reach back far earlier than Rainbow Dash's first Sonic Rainboom.
This is a follow-up to my earlier story, "The Best of All Possible Worlds". That story was set centuries in the past, while this story is present day. If you're wondering where the humans came from, see another side story that is otherwise unrelated to this, "Parade Coverage". Despite that, I expect that this story stands alone. The story's set in an alternate-universe Season Three that branched off early in Season Two.