Twilight has wondered ever since her brother got married to princess Cadance, why hasn't Celestia or Luna ever married?

To her shock, she is told, they are married!

Celestia and Luna decides to tell the story of how their husband, an ordinary human from a world called Earth, arrived in Equestria. How he was chosen by the gods, infused with the powers of his choice, and how he became a god.

Join Twilight as she learns the details of an almost forgotten time before the unification. How they met, and how he saved their world from monsters she could never imagine in her worst nightmares.