2035: The Greenlight: In 2025, South and North Korea unified. It was triggered by a sudden explosion in Midnight near the North of DMZ by a forest fire in December, 2024. The South Korean army unwittingly ended up helping to put out the fire. Such cooperation caused their unification. And 10 years later, A koreanAmerican Documentary Director Steven, working for USA tv-station NXN visits to korea. He is searching for information about the mysterical Green-light appeared in that forest fire in 2024. After some dangerous twists and turns, He found a huge secret of the DMZ fire and green light.