Two lifelong friends from Korea grew up side by side despite becoming completely different people. Jiho and Taejun, they were both from an agency In korea that were spies, Jiho was—sharp, controlled, and trained to handle high-risk situations without hesitation. The other, Taejun was—practical, cheerful, and energetic, he’s able to take apart and rebuild almost anything and had extraordinary unpredictable mind, also intelligent.