In 2039, a virus exterminated the world's males. Out of 3.9 billion people, only 1 is left. Xie Wujiu was locked in a penthouse, with four empresses taking turns "supporting" him and a bowl of life-extending soup every day. He drank it for four years before realizing the soup's ingredient was dead people's blood. The diary under the pillow read: You are not the only one. Thirty-seven Xie Wujius lie in thirty-seven cryogenic pods. Each one is him. Each one carries a virus that exterminates all humanity. And inside his body is hidden the only three-segment sequence that can terminate everything.