During a magic experiment involving the Crystal Heart, an accident caused Sunburst to enter a parallel universe. In this reality, Sunburst is recently engaged to Princess Sparkle. As he works to return home, the situation causes the stallion to consider some of his choices and what he truly values in life.

It has been centuries since the banishment of Princess Luna and Thestral society is a shell of its former self. In a land filled with strife, disorder and injustice Thestral Guard Ash stumbles upon an opportunity to strike it big and leave her old life behind. The age of the Equestrian frontier and the wild west is now.