Top programmer Lu Xiaopao received a blackmail video of her sister Lu Xiaomei being kidnapped and asked Lu Xiaopao to pay 1 million yuan to ransom her. The younger sister Lu Xiaomei, who was successfully "rescued", and Lu Xiaopao broke up. Unexpectedly, Lu Xiaomei was accidentally kidnapped by the cybercriminal gang "Black Domain", and the rescue operation began.

When the absolute evil 'Museoksajon', who has been sealed in the underworld for 10,000 years, steals the 'Guhonsak' and runs away, unknown deaths continue in the human world and become engulfed in chaos. 'Beommugu', a podu who digs into a strange death, is a seo-saeng 'Sapil -an ' who barely survives after being threatened with death .