Line:
Betrayal in the divine world: Shen Wei had an engagement with Mo Lin (Ning Xiuyuan), the Xuanming God of War, but was framed by relatives of both parties (Yan Xiao and Xue Ji). She had his divine bones extracted, his memory tampered with, and he was demoted to the mortal world.
Awakening in the mortal world: The two awakened their memories in the eighth reincarnation and discovered that the "system" they carried was actually an artifact (the Ninth World Mirror/Xuanming Sword), which guided them to reveal the truth.
The truth is revealed: Yan Xiao colluded with the demons to seize power, and the "betrayal" of the Chaos Tribulation was all a conspiracy. At the cost of his life, Shen Wei's father split his godhead into two and hid it in their bodies.
Return to the God Realm: In order to prevent Yan Xiao from opening the Gate of Chaos, the two work together to fight back to the God Realm. With the help of Weaver Girl, they use the power of the sun and the moon to restart the seal, and finally use Yan Xiao's own sins to sacrifice the Gate of Chaos.
Reborn together: After pacifying the divine world, Shen Wei and Mo Lin abolished the old rules, protected the common people, traveled to every corner of the Nine Heavens, made up for the regrets of thousands of years, and finally got married.