Season 1

Part 1: A gang of industrial spies led by a man named Michael Lee kills off an entire team of National Intelligence Service Agents. Dong Gwan Su becomes the new leader of Industry Security Team 3 and must put together a…

Part 1: Chan Mi, Mi Soon, and Ye Eun get their new assignments. However, before they can approach their targets, they must infiltrate Il Kwang Hitech by getting hired as employees. Meanwhile, Ye Eun struggles to adjust …

Part 1: Chan Mi and Mi Soon must escape from the CEO and Head of Research’s office before they get caught. Chan Mi manages to get out, but she realizes she forgot to bring the flash drive. When she goes back in, Seok Ho…

Part 1: As Ye Eun goes to Woo Won’s house to convince him to renew his modeling contract with Il Kwang Hitech, Chan Mi and Mi Soon track down Tak Sang Gi to a club. Things don’t go as planned, as always. Meanwhile, Woo …

Part 1: Gwan Su gets shot while the team goes to save Ye Eun, but thankfully he is okay. Meanwhile, Chan Mi chases down Tak Sang Gi’s secretary, Koo Tae Rim, on a motorcycle. Mi Soon and Ye Eun follow along in the van a…

Part 1: The team flies back to Korea with Pi Cheol Woong in handcuffs. They put on an act to scare him into telling them about his orders. The team prepares to lure and capture Wang Kai when he comes to Korea to pick up…

Part 1: The team manages to get out alive from the explosion, but their key suspect dies. Pi Cheol Woong ends up in the hospital after the traumatic incident, leaving the team without any good leads. While getting an ea…

Part 1: Michael’s phone number leads back to an unexpected person and Ok Cheol uses his computer to reverse hack Ye Eun’s laptop. Now that Michael’s people know that Chan Mi and the team are from the NIS, Chan Mi starts…

Part 1: Ye Eun gets asked to report to a mysterious someone about the team’s activities while Chan Mi realizes that the man following her is also an agent at the NIS. Meanwhile, Tak Sang Gi contacts Director Myeong and …

Part 1: The NIS begins to take away the team’s equipment and access to the network. Without the support of the NIS, the team decides to find a way into Director Myeong’s office to find the secret ledger. Meanwhile, Chan…

Part 1: The team succeeds in stealing Director Myeong's ledger. They use Ye Eun and the ledger to lure Chief Seo. Even after he is caught, Chief Seo seems to have no intention of giving up easily. He brazenly demands th…

Part 1: Chan Mi goes off to meet Tak Sang Gi on her own where Michael suddenly appears and kills Tak Sang Gi. Ye Eun and the team quickly trace Chan Mi's car and arrive on the scene. However, Chan Mi ends up getting sho…

Chan Mi checks herself out of the hospital despite everyone's best efforts to stop her. Meanwhile, Woo Won hears about Ye Eun getting fired over his contract annulment and goes to Il Kwang to help her. Later on, Seok Ho…

Chan Mi and the team finally arrest Director Myeong, but they lose Chief Seo in the process. Meanwhile, Mi Soon goes to her daughter's school to talk to the bullies' mothers. However, when they refuse to admit that thei…

Michael turns out to be Ok Cheol, the head of research at Il Kwang's Research Center. The team follows Ok Cheol and Wang Kai to Jeju Island to stop their next transaction. Meanwhile, Seok Ho finds himself at risk of los…

Chan Mi saves Mi Soon and Ye Eun from Wang Kai. Meanwhile, Secretary Byun arrives in Jeju and chases Michael down. He succeeds in taking the chip away from Michael but ends up getting hurt. The operation comes to a clos…