Shen Qingci, heir to a family of poison doctors, hides her identity and infiltrates the capital to uncover the truth behind her family's massacre and find the family treasure, the Celestial Secrets Scroll.
She uses her extraordinary medical skills as bait to get close to Xiao Heng, the ailing prince who is said to be afflicted with a deadly poison and rarely leaves his residence.
He will risk making a deal with the devil to stay alive; she will risk her own life for revenge.
Amid layers of deception, they test each other, carefully navigating one deadly situation after another.
As the truth gradually comes to light, they discover that they have long been caught in the same vast, terrifying web.
Will they join hands and unravel the mystery, or will their schemes leave them strangers at last?
