Because of humanity's ravages, the surface is no longer fit for humans to live on. Everyone has moved into underground cities, but even underground is not entirely safe. The magma beneath the earth is about to erupt and destroy every underground city.
As an inspector, Zhou Ming learns of the danger right away. Seven hours before the apocalypse, he meets a girl and falls in love at first sight. He takes her to the surface, hoping to enjoy just a few more minutes with her. But what awaits them is a huge conspiracy...