Many years ago, Canterlot fended off a Changeling invasion. Can another be stopped?

Twilight Sparkle is a unicorn, and she has a problem...

Cutie Mark Crusaders Treasure Hunters! YAY!

Twilight is invited to Canterlot to compete with some of the greatest unicorns in Equestria!

If you gaze for long into an abyss, the abyss gazes also into you

Don't you use your fancy mathematics to muddy the issue!

Rainbow Dash has yet another accident! How does this keep happening?