Programmer Qi Yue discovers a mysterious light door in a rental house and accidentally travels to a doomsday world where he witnesses the horror of zombies running rampant and humanity on the verge of extinction.
Qi Yue rescued scientist Lin Xiu who was besieged by zombies, and learned that this world is a blue star in parallel time and space, and a zombie virus broke out three months ago.
Qi Yue faces the moral dilemma of whether to report the double-crossing door to the country, worried about being regarded as a madman or losing his freedom, but realizes that this may be the key to saving both worlds.
Qi Yue finally decided to contact the National Security Department and meet with Director Zhao of the Special Affairs Office to prove his discovery with the advanced chips brought back from the doomsday world.
The country quickly formed a special team for the "Double Door Project". Qi Yue was appointed as a technical advisor and began to cooperate with the military and scientists to explore the doomsday world.
Qi Yue led a special team to travel to the doomsday world to perform the mission of rescuing scientists and collecting technical information, but was besieged by zombies.
During the retreat, Qi Yue took the initiative to stay behind to protect his teammates, showing courage without fear of sacrifice, and was eventually rescued by his teammates.
