Gi Beum was trapped inside Deuk Goo's building after he searched the place where they found the trailers. Min Jung came in and Deuk Goo programmed him to fight with Gi Beum. It's harder for Gi Beum to leave the place since there are electric laser lights that can kill him. On his way out, he realized that Gi Beum acquired AI eyes that can recognize complicated passwords and could do many things.
Gi Beum knocked Min Jung down. However, he couldn't get through the electric lasers. While thinking about what to do next, he sent the address to the headquarters to rescue civilians that were kidnapped by Deuk Goo's men. Geun Cheol assigned Mi Na and Gwang Cheol to take on the mission.
Ye Won, at her mansion, thought hard how to beat Deuk Goo. She contacted Gi Beum to discuss matters and help her. Gi Beum asked Ye Won to see him in Deuk Goo's building to give her a view of Min Jung's unconscious body. Ye Won arrived and Gi Beum asked her to switch off the laser control on the wall so he could go out. He also pointed to Ye Won's attention to Min Jung lying on the floor unconscious.
Meanwhile, Mi Na and Gwang Cheol reached the address that Gi Beum gave earlier. They managed to open the bars with taps with high voltage. Mi Na broke the lock of the cage and checked the men left unconscious. Gwang Cheol stepped inside and carried the other civilians. He rushed to go out and saved them but Mi Na tried to let him wait for Gi Beum instead. Then, Gwang Cheol stepped on another trap was set previously, which led to blowing the whole cage and killing the other civilian. Mi Na and Gwang Cheol felt guilty of what happened but Gi Beum told them to stop and focus on their task.
Tae Woong slowly recovered from the operation of his new right arm. Gi Beum visited him and used his AI eyes to go on with his records. A flashback of Tae Woong's childhood memories with his older sister came up. She took care of Tae Woong when they lost their parents.
Tae Woong's life changed when his sister died. It triggered his inner self and questioned how men kill innocent lives. He was one of the best men in Argos' defense. His older sister knew how dangerous Argos is, and she looked for ways to help her brother. His sister worked with the police to capture her brother and put him in jail for his safety. But the Argos men showed no mercy and killed his sister after she snitched to the cops their operations. They never exempt anyone who threatens them, not even Tae Woong.
In the funeral, Tae Woong was beaten by Argos men. One man sliced his arms and was almost killed. Geun Cheol saved him from the killers and took him to Dr. Oh's hospital to help him fix his arm. They attached an artificial arm that functions more than what human strength can give. It started Tae Woong's loyalty to Rugal and Geun Cheol.
Gi Beum found out that Ye Won killed her husband at the reservoir. She was not alone, it was Deuk Goo's guidance that made her pull the trigger. Gi Beum went to the reservoir with Bradley as Geun Cheol allowed him to use what his AI eyes offered more advanced data. Gi Beum searched the reservoir area and a nearby store that provides refreshments and service to learn or practice diving.
As they further checked the place, Gi Beum found a man lying down experiencing weakness and in pain. Gi Beum looked at the man and recognized it was Chairman Deok. He survived after he suffered from Ye Won and Deuk Goo's hands.
Gi Beum contacted Deuk Goo and asked him to meet at the reservoir. Deuk Goo went and saw Chairman Deok in a wheelchair. He was surprised though he was good at hiding it in sarcasm. He was about to hit Chairman Deok but they were fast. Bradley made a personalized poison they planned to inject into Deuk Goo's body. In tremendous pain, Deuk Goo stood up, Chairman Deok pulled his gun and shot Deuk Goo in the body. He was half breathing, but he tried to shout for Gi Beum to fight again.
