A psychology professor has been murdered by a killer with method of "Murder game" described in the novel named "Sigmound." As a result, Han Joon, the author of "Sigmound," gains popularity and uses media other as well as other people to succed in life. He becomes successful using death of professor. A month later, Han Joon receives a blackmail from a mysterious man that mentions about his secrets and promises to bring him down unless he tells who the real killer is.