In the distant future, technology has advanced tremendously, but excessive development has thrown Earth's ecosystem out of balance. After a mysterious laboratory accident, the world enters an apocalypse, and everyone is trapped aboard paper airplanes that emit strange energy waves and cannot be controlled at will. The whole population must now fight to survive. The heroine, Wang Jin, is an ordinary research scientist. The hero, Siyi, boards a paper airplane with her. They are joined by Jack and Evan, and the four support one another as they struggle to survive.
