A group of criminals led by a mysterious mastermind known as the Professor recruit a team of specialists to carry out an audacious heist on the mint of a unified Korean economic zone. Taking hostages and donning red jumpsuits and masks, the robbers attempt to print billions in currency whilst negotiating with authorities and managing tensions within their own ranks. The series draws heavily on the format of the Spanish original, transplanting its themes of rebellion and survival into the politically charged context of Korean reunification.