Underneath the light and bright side of Seoul, big shadow laid with dark secrets. 6 men rule half of the country, which are:

• Son Hyunwoo, Vice Minister of Trade, Industry and Energy (The leader and mastermind)
• Lee Minhyuk, Head of merge and acquisitions department (The fund manager)
• Yoo Kihyun, underground IT Manager (The watcher)
• Chae Hyungwon, fight & sex club owner (The trainer)
• Lee Jooheon, gang leader (The executioner)
• Im Changkyun, firearms & car dealers (The Supplier)