Canterlot has been attacked by the forces of the Storm King, who now control the city completely. Three of Equestria's Princesses have been captured by Tempest Shadow, with the fourth being relentlessly hunted down. It truly seems that Equestria is facing its darkest hour. But, it soon turns out that Tempest will not hold Canterlot without a fight, for ponykind still has one leader she must contest with. A stallion who has no intention of sitting back and surrendering his wife and birthplace.

A stallion who does not come to Canterlot's gates alone.