Against the backdrop of a world devastated by the Great Tribulation, two races of humans coexist - the immortal Servants endowed with extraordinary abilities and the remnant of humanity who survived the Great Tribulation. The Great King has given three crucial tasks to the Servants: to restore the land, provide for the survivors, and guide humanity's descendants. The epic storyline unfolds over a millennium, culminating in the release of an ancient enemy determined to eradicate humanity, resulting in a world-changing rebirth.