Sunset makes it her mission to contain the stray Equestrian magic that leaks into her new home, doing her best to minimize corruption and damage to anyone that can be harmed by it. As a powerful enemy emerges from the depths of limbo, containing it may not be an option anymore.

Now, if only Twilight wasn't so eager to toss herself into the fight, that would be great.

In the moments between thoughts, Twilight tries to articulate her feelings but she's not sure exactly what they are.