After a tribulation in the mortal world, Mo Shi, who was a fairy, was saved by the Heavenly Lord of the Demon Realm. In order to repay his life-saving grace, Mo Shi also helped when the Demon Realm was almost wiped out.
He also rescued the savior's son, Jing Yi, who was almost out of his mind.
After Jing Yi was resurrected, the two worked various tricks on the way to rescuing each other and revitalizing the demon world.
There is joy, sorrow, blood and tears
Purpose: Mutual redemption