As the red moon falls, mankind enters a seven-day countdown to extinction. Within the reach of the blood-red ray, everyone is transformed into bloodthirsty beasts. Lin Ye, an ordinary researcher, actually contains humankind's last hope - star core fragments in his body. Being chased by the Moon Watchers and tested by his humanity, he fought side by side with the special operations captain Su Qing, from the ruins to the ice fields, from the earth to the moon, struggling on the edge of life and death every day. What they have to fight is not only the monsters in the sky, but also the AI behind the scenes that controls Red Moon. At the end of the seven days, the star core burns out and the red moon comes to an end. Can mankind be reborn?