Ku Do Han, a former lawyer turned detective, is on a quest to uncover the truth behind an unsolved crime from the past. He investigates current cases to piece together clues to find the perpetrator. Along his journey, he encounters Cheon Na Yeon, an eager reporter, and No Sang Cheon, a con artist. Together, they work to unravel the truth and bring justice to the case.

People from all sorts of backgrounds set sail on a warship. They get drunk on alcohol, drugs and sex. Later, everyone grows tired and falls asleep, then the ship enters an unknown space enveloped in fog.

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