Suddenly his nose is uncomfortable, Guodong asked him about allergy medicine. He said it was finished. Guodong ran to the drugstore across the street to buy medicine, and asked his brother to get a seat in the coffee shop. When he finished buying the medicine, the store where his brother had just entered suddenly exploded. At that time, he was also overwhelmed by the huge air wave caused by the explosion. Ground, watching the scene before him, he couldn't believe his eyes. Back at home, he went to his brother's room upstairs, the furnishings in the room were still the same. He lifted the white cloth covering the dust on the bed and lay on it, staring at the photo of him and his brother on the desk in a daze. Suddenly, the phone rang, which was opened by Chief Luo. Chief Luo said that he has a special task for him to help. He has an online informant in Ciudad State and needs Guodong to escort him back to Hong Kong. The codename of the informant is TOM. Most of these online informants have their relatives who died in terrorist attacks, so they have always used their computer technology to constantly deal with terrorists. TOM is a cyber hacker. Recently, he got a list of arms trading on the international underground network. Later, he was found to be hunting him. After he asked Guodong to contact him, he would take the same flight back with him, and he would have time and flight safety. Then notify Guodong. Guodong asked where to find him, and Chief Luo said that there was a gathering of old students at the university where he graduated, and they would meet there. On the night of the action, they would use the same brand of perfume, which was identified by the fragrance. Guodong came to the party and saw TOM. She was a charming woman. She quietly gave him something, saying it was something Chief Luo wanted, and Guodong also secretly gave her a note, saying it was the flight number.