In a far future where the universe is highly civilized and ships travel freely between the stars, a meteor shower wipes out half of Earth. Galaxy Eye, a powerful high-level force, launches the Sky Wall Project in the name of protecting the planet. No one expects that the sky wall, once raised, will stay shut forever, turning Earth into a sealed room. Even that is only the beginning, since an even larger disaster is still building. Young Mai Dang holds firmly to the belief that however dire things get, the only hope lies in breaking out. The film asks whether anyone can escape when the whole planet becomes a locked room.