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 redeem her. The younger sister Lu Xiaomei, who was successfully "rescued", and Lu Xiaopao broke up. Unexpectedly, Lu Xiaomei was accidentally kidnapped by the cyber criminal gang "Black Domain", and the rescue operation began. Lu Xiaopao used superb network technology to break through the blockades of the "black domain" and found the whereabouts of the black domain. Unexpectedly, he fell into the tricks of the "black domain" leader Anthony. This life and death rescue is hard to predict.