Orphan Ning Ruanruan was forced by her money-grubbing adoptive parents to marry her twin sister Sheng Cangzhou, the heir to the Sheng family who was rumored to have become a vegetative state due to a car accident. Everyone is waiting to see the joke about Ning Ruanruan being abused by the evil nanny and being expelled from the family. Little do they know that Ning Ruanruan looks weak but is actually a "little devil" who is proficient in hypnosis and fighting. After marriage, she relied on the high IQ of a psychiatrist to play with the Sheng family's villains, who all had their own agendas, and at the same time "tortured" her husband who was in a vegetative state.
However, Sheng Cangzhou is no ordinary vegetative person. He is actually an immortal emperor who failed to overcome the catastrophe and returned to modern society. He watched everything indifferently in a "vegetative" state. He originally planned to eliminate these ants when his supernatural power was restored, but he was unexpectedly attracted by this "little substitute devil" who was full of bad ideas. With the "miraculous recovery" of Shengcangzhou, the two started a dual mode of pretending to be pigs and eating tigers, and joined forces to sweep away malicious competitors in the business world and evil family forces. Ning Ruanruan was responsible for lighting the fire, and Sheng Cangzhou was responsible for destroying the family. The couple worked together to turn the wealthy family into their hunting ground.