In a world where two parallel universes exist, a powerful Korean emperor and a fierce detective must join forces to protect their respective realities from a dangerous threat. The emperor, Lee Gon, hails from a world where Korea is a monarchy ruled by a single monarch, while the detective, Jung Tae-eul, lives in a world where Korea is a republic. As they navigate between their two worlds, they must confront a mysterious figure from their shared past and prevent a catastrophic event that could destroy both of their realities. With their unique abilities and strengths combined, can they save their worlds and create a better future for all?

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