In "Mirror Coffin in Deep Alley", Lin Yan stepped into the remote and silent Alley of the Dead for low rent, and signed three strange prohibitions: Do not look into the mirror at night, do not answer the sound at midnight, and do not look back when entering the alley. He originally thought it was just a trick on the rules of the old house, but he didn't know that he had already entered a sacrificial killing game that lasted for four hundred years.
Wangdexiang Lane is always covered with shadows. At the end of the alley, in an old house, there stands an ancient soul-haunting mirror passed down from the late Ming Dynasty. The mirror does not shine on living people, but only locks in the souls of the dead. During the Republic of China, several people disappeared out of thin air here. Traces of the dead were engraved on the mirror. The entire ancient alley was blocked by the evil spirits of yin and yang, making it impossible to enter and exit. Lin Yan is not the only one who is trapped in the alley. Su Wan, a girl who is also in a desperate situation, partners with him to survive with the fate of breaking the situation in seven days and losing both of them. The taboos are broken layer by layer. The female ghost in the mirror who calls out her name at midnight, the wandering ghosts in the alleys, the market city in the mirror that reverses life and death, and the strange events that follow one after another tear apart all luck.
Lin Yan bucked the trend and stepped into the mirror, falling into the mirror world where yin and yang were inverted, uncovering the truth that had been sealed for centuries. The gentle and harmful faceless mirror ghost is an innocent girl who was sacrificed by the first generation; the old woman who has been guarding the alley for generations feeds the ghost with living people in exchange for the longevity of her family; the ancient well at the bottom of the alley is buried deep in a sarcophagus for thousands of years, and the evil spirit in the coffin is the biggest nightmare in the entire city. Four hundred years of guarding the secrets of the alley, seven days and nights of life and death game. The so-called taboos are never to protect people's lives, but are just sacrificial rules to filter pure souls.
When the Yin-Yang barrier collapses and ghost alleys appear, all the dead souls can take a breather and all scams are completely exposed. In a desperate situation, the two used their obsession as a blade to break the mirror and kill evil spirits, reverse a hundred years of fate, and tear apart the only way to survive at the boundary between the human world and purgatory.