A giant transparent dome suddenly covers the world, cutting off sunlight and air, and the earth's ecology is on the verge of collapse. Outside the dome is a purgatory of cosmic radiation, and inside the dome is a human purgatory of depleted resources. {Lu Xun} was once the core designer of the dome project. Because he opposed the construction, he was called a "traitor" and went into exile in the apocalypse. When the energy core of the dome is about to be exhausted and mankind is facing a desperate situation of suffocation, he is forced to step forward and lead a team through the dome control room filled with deadly mechanical guards in an attempt to restart the natural circulation system. During the thrilling breakout, dust-laden clues emerged one after another. Lu Xun was horrified to discover that the builder of this dome that imprisoned current humans was actually humans from the future themselves.