He Lan, a second-year graduate student, had gone through the baptism of the exam, and was summoned by his instructor to the police station to look for people... First, there was an attack case where the suspect could not be found, an experiment where the subject could not be found, and then there was a corpse case where the deceased could not be found... As he went deeper and deeper, He Lan reached an unknown field, and once again touched an unknown existence...
Intention: Never forget the original intention
