The Cutie Re-Mark: Heroes of the Present

Twilight Sparkle, Dusk Shine, Spike and Barbra are going through timeline after timeline in order to stop Starlight and Stellar from messing up the Sonic Rainboom...but the disastrous presents the four come to are so bad Twilight and Dusk make a bold choice instead of instantly trying to stop Starlight and Stellar, they fix the altered Equestria's.