A long while back, during the Barian Invasion of Heartland City, two evil beings named Vector, one of the Barian Emperors, and Don Thousand, a powerful Barian, created one million Barian Number cards to combat the Astral Number cards brought to Earth by Astral World. The battle waged on to the point where the people of Earth had gotten involved, and in the end, Don Thousand and Vector were defeated, ending the war and allowing the people of Earth, Astral World, and even Barian World to live in peace.
If only that were indeed true.
Even though the main threat against the worlds was stopped, the remaining Barian Numbers were still out there, and before anyone could realize this, things will take a turn for the worse elsewhere.
Canterlot City, a place full of kind, caring people, would soon be under attack by their own people, wielding the Barian Numbers as their Keepers, or even puppets.
This will be where new stories begin; stories about many other people, ready to step up when the going gets tough. It will even show stories of heroism from the local high schools, especially a certain girl band.
What stories will await you? Will you be a part of it? There's only one way to find out...
You must simply turn the page.