Min-hyeok and Hae-ji, Seon-woong and Mi-mi, who came on a couple's trip to Vietnam, are very excited. Min-hyeok also enjoys a thrilling secret meeting with his wife Hae-ji as well as Mi-mi, who has been in a long-term relationship, and has a satisfying time. However, Min-hyeok suddenly feels intense pain and stops breathing, and when he opens his eyes thinking he is going to die, it is his first day in Vietnam. Min-hyeok, who is confused about everything, finds out that there is a reason for the vacation that ends in death...
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