Twenty years ago, Shangguan Yuezhi, the High Priest of the Wuyou Kingdom, and Prince Zili of the Ziyi Kingdom fell in love. Later, war between the two kingdoms forced them to take opposing sides. During the battle, High Priest Shangguan Yuezhi used the Shangguan family's ancestral "Hellish Gods and Ghosts Painting" to forcibly open the gates of hell and summon a million shadow soldiers to fight the Ziyi Kingdom. The Ziyi forces were routed, and Zili was gravely wounded. The Wuyou Kingdom occupied Linghua City in the Ziyi Kingdom, but was also severely weakened and had to abandon its further invasion. This brought a temporary peace to the people of both kingdoms... until twenty years later, when the Gods and Ghosts Painting appeared again, revealing two decades of grudges and schemes...
