In the "Shadowless Era" of 2077, humans relied on "light and shadow shielding technology" to eliminate all physical shadows, thereby cutting off the "Shadow Eaters" lurking in the shadows from devouring human emotions, and the world fell into a numb "absolute security." Lin Ye, a 22-year-old convenience store clerk, is the only person in the world who retains the ability to "see shadows" - he can not only see the physical shadows of himself and others, but also the emotional fragments floating in the shadows that have been forgotten by humans (light spots of joy, dark lines of sadness, and sharp edges of anger).
While on duty late at night, he discovered that a woman's shadow was being eaten away by black mist, and in the mist, the outline of the Shadow Eater clan, which had long been declared "extinct", emerged. At the same time, Qiming Group, a giant company that controls "light and shadow blocking technology", suddenly began a frantic search for "people who can see shadows." Lin Ye is forced to take Su Xiao, a woman targeted by the Shadow Eaters, on the road of "shadow hunting": they want to find the legendary "Photo Zone" that is not covered by technology, unlock the secret of the symbiosis of "shadows and emotions", and confront the truth covered up by the Qiming Group - the so-called "eliminating shadows to ensure safety" is just exchanging numbness for false peace, and the resurrection of the Shadow Eaters is the backlash of human collective emotions that have been suppressed to the extreme.
During this journey, Lin Ye gradually discovered that his "special ability" was no accident. His family had been "shadow keepers" for generations, and Su Xiao's shadow contained the key to awakening human emotions and ending this "shadowless scam."