Zhao Que transmigrates to a parallel world, never expecting to become a haunted-house sleep tester.
After binding to the Haunted House Sleep-Test System, he receives a different reward every time he spends the night in a haunted house.
He tests the Wen Mansion and receives the Heavenly Talisman.
He tests the fishing grounds and receives Spirit Summoning and Dispatching.
He tests a ruined temple in the mountains and receives the Fenghou Qimen.
He tests an ancient palace and receives the Origin of Qi and Body.
After testing one haunted house after another, Zhao Que has unknowingly become the strongest person in the world.
As one Yin God after another descends upon the world, it stands on the brink of endless darkness.
Then Zhao Que, already invincible, emerges from nowhere and crushes all opposition.
