A cyber crime investigation team is trying to catch the ruthless cyber criminal called Hades after his crimes are linked to the death of actress Shin Hyo Jung. Woo Hyun finds out Hades is Ki Young, his old police academy friend and roommate who dropped out

Hades tries to clear his name from the murder case. During a secret meeting with Woo Hyun, an explosion leaves one man dead, and another critically injured

Ki Young (Hades) takes on Woo Hyun's identity. Hyuk Joo becomes the leader of the Cyber Crime team. People who have posted negative comments about Shin Hyo Jung online are getting murdered

Choi Seung Yeon gets kidnapped by the murderer. We find out more about Woo Hyun's family and his past relationship with Kang Mi

Hyuk Joo discovers why Woo Hyun is not acting like his old self. A group of hackers called Daehyung plans to release the largest online attack against Daehan Power, which controls the power for all of Korea and the power plants

After the online attack, Sekang Securities suspiciously merges with SafeTech, an online security company, and makes a huge profit. We find out why Ki Young dropped out of the Police Academy