In order to find his sister Xiaoyu who disappeared three years ago, Chen Mo was stationed at a funeral home that was on the verge of bankruptcy, but he was accidentally involved in a strange incident related to the "Eternal Life Medicine". He wears a red rope of copper coins soaked in his sister's blood on his left wrist. This is his only connection with his sister and the key to triggering his special abilities.
On a rainy night, Chen Mo received a mysterious order. After coming into contact with the strange ice coffin No. 7, He accidentally activated the "Yin Pupil" skill - he could see the obsession of the dead, analyze supernatural clues, and unlock system tasks. Since then, he has continued to encounter dangers such as the dead bride and the corpse controlled by obsession. Copper coins, red rope and dark eyes have become his life-saving charms.
The core conflict revolves around "protection and redemption": In order to develop the "Elixir of Immortality", Changsheng Pharmaceuticals conducts crazy human experiments. Xiaoyu's heart is used as a key carrier to cultivate the "Wisteria King" and is hidden in the Blood Moon Laboratory on the third underground floor of the funeral home; at the same time, the pharmaceutical industry also secretly exchanges ashes and creates Wisteria envoys in an attempt to cover up the crime and realize the "Immortality" conspiracy.
Chen Mo teamed up with the blind girl Su Wan, the descendant of the guardian Lin Feng, and the contract spirit Aunt Hong, and relied on the "obsession retrospection" and "dead communication" abilities unlocked by Yin Tong to find five letters from the dead, decipher the mystery of the Blood Moon Gate, and fight against the Wisteria Messenger and the Wisteria King. He not only wants to protect Xiaoyu's heart from being taken away by the pharmaceutical industry, but also exposes the crimes of Changsheng Pharmaceutical, and finally awakens his sister to seek justice for all the dead who were harmed by the experiment. The continuous evolution of Yin Tong's ability has become his core strength to fight against darkness and achieve redemption.
