During the day, he is a "madman" trapped in a mental hospital. At night, he is the "punisher" who hunts monsters.
Lin An thought he was just a patient with a split personality - he was confused and fragile during the day, but at night he would turn into the cold "Lin An", using the power of shadow to clear away the dark creatures that breed in the city. Until a bizarre serial death case made him discover the terrible truth hidden behind his "illness":
He is the chosen "vessel" in an ancient ritual.
When the container matures, it will become a "door" connecting the two worlds.
There were only seven days left for him.
In the struggle of split personality, Lin An must form a fragile alliance with the female detective Chen Wei who is pursuing the truth, and the mysterious psychiatrist Su Mingxin, to fight against the mysterious organization "Twilight Sect" hidden behind the scenes, and the gentle lawyer Zhou Mingrui who planned everything.
And is the "second personality" that is gradually awakening in his body a curse or the only salvation?
When the hunter discovers that he is the ultimate "sacrifice", should he destroy himself or embrace the darkness?
