[Strong hero and heroine + Alchemy and face-slapping + Transmigration]
Xiao Li is the only female King of Hell in the Underworld, but she fails her tribulation because she died without repaying a debt of gratitude.
Just then, the legitimate daughter of the Chancellor's household is killed by her father and half-sister, nailed inside a coffin and turned into a vengeful spirit. Summoned back to the human world, Xiao Li returns.
As it happens, she needs a body, so she makes a pact with the Chancellor's daughter to avenge her and find her mother.
She thinks nothing of the Chancellor's household. “You insignificant ants, when I, the King of Hell, say you'll die at the third watch, how could I let you live until the fifth?”
Her shameless fiancé shows up out of nowhere, affectionately wrapping an arm around her waist. “Getting angry harms the liver, my dear. Stand here and behave. Just sip your tea and enjoy the show. I'll make sure you get justice.”