Centuries have passed since The Elements of Harmony were united.
Centuries have passed since Twilight Sparkle breathed.
Centuries have passed since Starlight Glimmer finished building The Gungeon.
Centuries have passed since Spike the Dragon stopped working as a peacekeeper for Equestria.

With Ponykind on the brink of war, with all three tribes at each others throat and with the disappearance of Magic from Ponykind, It seems Spike has no more reason to help them.

But he still has a chance to save Equestria, one last time.