A chance encounter in the realm of dreams links Princess Celestia with a creature from another reality.

Soon Equestria is overrun by an alien nation hoarding power and hunting a sinister eldritch truth. For Celestia and friends it seemed all that mattered was regaining their freedom and restoring normality. Yet it may be too late for either. The eager colonists are hounded by demoniac foes with no regard for innocent Equestrian life. Meanwhile the pandimensional empire of Zaul is committed to stirring up more trouble than anypony can handle... without their help.

Open rebellion is impossible. Only patience, cunning and cleverness can leverage a better future. Whatever happens Equestria and the world will never be the same.