Jachs, a Generalmajor in the changeling army, and more recently Governor of Canterlot, thought everything was going well. Chrysalis had just crowned herself Empress of Equestria, and him along with his friends, Alcippe, Marsillio and Finicus had finally discovered their destinies in life. After a lifetime of war and conflict, he was finally finding a moment of peace.
Then the city and Protectorate of Manehattan fell to the Equestrian Liberation Front, and the ponies rose back up to defeat the changeling oppressors and restore Equestria.
Now, as the partisan forces move towards Canterlot itself, Jachs has come to a conclusion. The Changeling Hegemony is finished. The Heer stands no chance against the ponies fighting to reclaim their homeland.
So instead, he meets with his friends to pay a mare in the caves a visit.

Set in the world of the popular Hearts of Iron IV mod Equestria at War.

Ponyville, Equestria. Population 5000.

Fallow Meadows, Indiana. Population 8000.

Two towns, two species, two worlds.

But worlds will collide when both are hit by mysterious storms that transport them to a third world unknown to either. Trapped in a place hostile to them both, can human and pony learn to work together? Well, yeah, the story wouldn't be called Unity otherwise.

The real question is what happens when it turns out that they are not alone...