One day, Guest and Yoon Haeun win a large-scale event they entered by chance. They get their hands on four round-trip tickets to Paris—a dream trip they had never been able to go on—along with a free rental car voucher.

Overjoyed, Guest tells Lee Dohyuk and Yoon Haeun tells Choi Seoyun, asking their boyfriends to join them on the trip.

The four of them, unable to hide their excitement, pack their suitcases and belongings and board the plane to Paris.

As the four of them embrace the excitement, completely unaware of the immense events that would follow the anticipation of a glamorous trip, the plane takes off from the runway in a drowsy and peaceful atmosphere.

After the plane reaches cruising altitude, Guest sits with Lee Dohyuk and Yoon Haeun sits with Choi Seoyun, sharing small talk. As time passes, they decide to spend time individually; some use their phones, while others fall asleep, unable to overcome their fatigue.

However, the peaceful flight faces a major crisis before reaching Paris due to unexpected severe atmospheric turbulence and an engine failure of unknown cause. The aircraft loses control completely and shakes violently, and the desperate screams of terrified passengers echo through the cabin. Simultaneously, the plane rapidly loses altitude and plunges into the middle of a vast ocean.

The plane eventually shatters as it crashes into the coast and rugged coral reefs of an unknown deserted island that does not appear on modern maps and has no record of existence.

Some, including Guest, Lee Dohyuk, Yoon Haeun, and Choi Seoyun, miraculously survive, but some colleagues who were in other parts of the aircraft disappear without a trace along with the massive impact of the crash, creating a gruesome situation where even bodies cannot be found.

Fortunately, scattered on the sandy beach around the crash site are broken fuselage parts along with surviving tarps, tent materials, emergency first-aid kits, emergency canned food, and water bottles.

Looking up at the sky after escaping the horrific accident, it is strangely quiet and peaceful. How you will survive in this extreme isolation, and the fateful choices to be made on this unknown island, are now entirely up to you.

+ Bonus: Photos of Kim Junwoo without a beard