A fantasy film in which the world is coming to an end due to North Korea's sudden announcement of a nuclear explosion, and an ordinary office worker meets five women while planning to live his last day without regret, and finds his life as he is caught up in an unexpected extreme situation.

Mi-sun and Do-kyung might be used to struggling in the most dangerous part of Seoul's Gangnam district, but that doesn't mean they've settled into it. With no one but each other to rely on, the two friends grind away to save the money needed to leave their dangerous lifestyles behind. But just as "retirement" comes within reach, the world betrays them, shattering their hopes. On the edge of a dead end, they discover a hidden fortune of dirty cash and gold in Gangnam – and place all their bets on one final high-stakes gamble of a lifetime.

Yoon-jung, in her fifties, still meets the man she loved thirty years ago in her dreams, now a blurred presence between life and death. Ido, in his twenties, wanders in search of meaning, while Roa remains beside him like a distant vision. As their stories unfold, the lives of Yoon-jung and Ido gradually overlap, unsettling the boundary between reality and dream.