Description:In the future, the greenhouse effect intensifies, the environment deteriorates, and people are forced to move to underground cities. The energy supply in the underground cities is running out, so scientists have been working hard to develop a temperature balancing agent in the hope of leading everyone back to life on the surface. However, on the day of the gas emission experiment, toxic gas leaked out, causing the subterranean lizard to mutate into a giant monster and wreak havoc, leading to a disaster. People have to take the only train to the surface and embark on a journey of escape in desperate circumstances.
