Astral Shift is a short story that took place between Hourglass and Windwalker Merc Series. Delta Realm, a Rim only accessible through Astral Projection, was in trouble for Demonic Invasion. The Archangel Michael has decided to send the Windwalker Protectorates to save the Rim from being destroyed. Failure to do so will also result in the destruction of Central Rim, Realm 2 because like Realm 1, Delta Realm is also a duplicate of the original universe, our home.