"The world is changing, Little One… Be ready."

In a time long past, dark magic, older magic, governed the laws of Equestria. Sworn oaths were binding, and those of the royal line possessed a power unmatched: complete immortality.

Barrier, a naive young prince of the Royal Line, is summoned by a dying relative in the Great Northern to take ownership of his land.

Lionheart, a petty thief extrodinare, is simply trying to make each day - and each robbery, pick pocket, and heist - profitable enough for each day's food and lodging.

Fate, as it goes, can change around a pony's destiny in the strangest of ways.