One strange day, roughly 20,000 otherworldly spaceships flew into stable orbit around the Earth. After six months with no contact from the mysterious spacecrafts, in a certain Asian village, a young girl named Zihan discovers an old man who fell from the sky. Soon, many more elderly drifters in similar clothing begin popping up all over the world-their numbers surpassing two billion in total.

What is the goal of these mysterious visitors? Find out in this adaptation of a story by the popular Chinese sci-fi author, Cixin Liu!