When Guo Weijie was concentrating on studying Wu Yu's prison information, he received an urgent notice: the 901 server was being attacked by hackers.He immediately led Zhou Jia and others to the scene, but unfortunately, they failed to stop the fierce offensive of hacker Lin Ye.Just as Guo Weijie was about to take the last resort - cutting off the server, Wang Hui and He Zhifei, deputy director of the network, arrived in time.Since this server is closely connected to satellite launches, the network must not be disconnected.He Zhifei used his superb technology to successfully resist the hacker attack.However, Lin Ye did not give up. He quickly led his men to launch a larger-scale attack, trying to cause server lag or even paralysis through massive access.He Zhifei cleverly used the tactic of luring the enemy deeper, making the other party mistakenly think that they had succeeded, and at the same time locked their IP address.Based on this clue, Guo Weijie's team members successfully found Lin Ye's hiding place and captured them all.During the interrogation, Lin Ye initially tried to deny being instigated, but the banknote evidence at the scene made it impossible for him to deny it.He could only reveal that he met a mysterious person on the Internet, but he only knew his face but not his name.Guo Weijie ordered him to be taken back to the police station.

At the same time, He Zhifei carefully checked the lines in the police station and discovered a special device connected to the intranet.In order not to alert the enemy, he did not immediately cut off the contact, but cleverly used this device to reversely invade the other party's network.However, Wang Hui expressed concerns about this and believed that it was too risky.She hoped to wait until the leaders' meeting was over before making a decision, but Guo Weijie took the initiative to take responsibility.He is determined to uncover the truth, no matter how high the price is.

Later, Guo Weijie and Zhou Jia went to the prison to learn about Wu Yu's situation from the warden.But the warden remained tight-lipped and only briefly mentioned Wu Yu's relationship with Wei Dongshan and his efforts to stand up for Wei Dongshan.The warden also revealed the address of Wu Yu's sister Wu Fang, hoping that Guo Weijie could find useful clues.Guo Weijie was keenly aware of what the warden was concealing, but he believed that the warden had done his best.Before leaving, the warden took out a book with a photo with Wu Yu and fondly recalled the past time.

On the other side, when Wu Fang was preparing to go to class, Guo Weijie and Zhou Jia found her.After Wu Fang knew their purpose, she specially adjusted the class time.She said she knew very little about Wu Yu's affairs. She only knew that Wu Yu left some money after he came back and left cruelly.Later, Wei Dongshan also came to Wu Yu but failed to do so.Zhou Jia took a photo of the contact information left by Wei Dongshan and left with Guo Weijie.Their next goal is to find Wei Dongshan and learn about Wu Yu's whereabouts.

Guo Weijie changed his appearance as a gangster and went to find Wei Dongshan.He lied that he was Wu Yu's enemy and wanted to know his whereabouts.But Wei Dongshan saw through his disguise at a glance and misunderstood that he was here for Wu Fang.Wei Dongshan recounted his past with Wu Yu and how they met in his hometown.He also mentioned how his sister Lele became curious about Wu Yu and got his sunglasses as a gift.