After accidentally causing the death of his partner during a hostage situation, Wu Young-min quits the police force to work for his uncle as head security of Dreampia, an immense shopping center. Dreampia is currently in the rebuilding stages as a fire destroyed parts of it five years ago. The re-opening was scheduled in a few days, until some strange murders begin to occur in the building. It seems that the victims, all employees of the mall, have committed suicide in very gruesome and unconventional ways.