A South Korean family celebrates a wedding, but the groom's astronaut duties are interrupted by a reconnaissance flight during a nuclear test, triggering an earthquake with a mysterious epicenter. As the quake's path shifts towards Seoul, a photographer documents the damage and authorities declare martial law. A gigantic underground creature, Yongary, emerges, causing chaos and destruction.

Yongary, Monster from the Deep
A monstrous, fuel-driven ancient creature unleashes chaos in Seoul as a series of seismic events ravage central Korea, causing widespread destruction.