It's been two years since representatives of the United Human Federation arrived in Equestria, begging for help in a crisis situation. Months later, the Human-Equestrian Alliance was formed. But now, relations between the two species are strained, as mistrust begins to boil. It comes to a head when all UHF forces leave Equestria during a massive invasion, leaving the ponies to fight for themselves. Have the Humans abandoned their allies? Or do they have something bigger up their sleeves? The clock is ticking, as the ponies are on the verge of complete surrender, and humanity might just be Equestria's last hope.

(A/N: I know this is a beaten to death idea, but I'm putting my own spin on it, as well as some "Ace Combat" Elements.)