Animal rescuer Xin Xiaoqi broke into Lu's breeding farm on a rainy night and released a group of scarred ferrets, unaware that genetically modified experimental subjects were hidden among them. The next day, the second-generation fur trader Lu Lebai followed her with a collar and warned her coldly that "it was not just the mink that was stolen, but also human lives."
What was thought to be a confrontation between business and goodwill turned out to be completely out of control due to a mysterious virus in the ferrets - this deadly virus turned out to be the key to curing Lu Lebai's mother's terminal illness. Xin Xiaoqi was forced to join forces with Lu Lebai, dealing with the laboratory and the rescue station, but gradually discovered that the genetic experiment twenty years ago and the mysterious death of her father were closely related to this crisis.
When the ferret's whimper overlaps with the heartbeat, and when the truth tears away the mask of disguise, Xin Xiaoqi and Lu Lebai test and get closer to each other in conspiracy and redemption. What they don't know is that a bigger crisis is brewing in the dark. Those ferrets that were let go have already become the "living keys" coveted by all parties.
