In the dead‑of‑night on Seoul’s Gangbyeon Expressway, a sudden, massive collision throws four very different cars into a single, cramped police interrogation room. The atmosphere hums with the electric tension of strangers whose lives have been abruptly tangled, each clutching their own secrets while a looming, multimillion‑dollar prize flickers in the background of the upcoming Quiz Show.
Among the bewildered survivors is Do Ho‑man, a man whose world is narrowed to a comatose wife and a strained relationship with his brilliant yet volatile son. In the next car sits Kim Sang‑do, a gambling‑addicted husband whose restless energy collides with the constant worries of his nagging wife and the silent fear of their young daughter. The third vehicle carries Lee Do‑yeop, a hard‑edged fixer whose willingness to solve problems for cash places him on a precarious moral edge, accompanied by a companion equally comfortable in the shadows. Finally, the fourth car holds a depression‑therapy group, led by the steady club president and including the thoughtful student, the weary French teacher, the pragmatic mobile‑phone salesperson, and Kim Yeo‑na, whose quiet resilience hints at deeper currents beneath the surface.
When investigators uncover a memory stick hidden in the belongings of the woman who caused the crash, they discover it contains the answer to the final, legendary question of the next Quiz Show episode—a question that has swollen the prize pool to thirteen‑and‑a‑half million dollars. The revelation ignites a frantic scramble: strangers become reluctant allies, trivia becomes a weapon, and every whispered fact feels like a stepping stone toward a life‑changing windfall. The tone shifts between tense negotiation and pulse‑pounding urgency, as each participant weighs the seductive promise of wealth against the cost of trust.
The film’s world is a restless, neon‑lit night where ordinary people confront extraordinary stakes, blending thriller intensity with a sharp social commentary on ambition, desperation, and the allure of easy fortune. The mood is taut, the characters richly layered, and the race toward the Quiz Show’s decisive question becomes a crucible that tests loyalties, morals, and the very definition of what it means to gamble with one’s future.
