In 2032, during a time of cholera.
There is a brand of cigarette that lets you choose, with a switch, between tar and tar-free, between toxic and harmless. Yet after the young entrepreneur Yu Xiangyang and his companions smoke it, they collapse dead in the street.
A week later, all the AI forensic lambs in the country are arrested. A female nanovirus, both male and female, is discovered implanted in them. Anyone carrying the male form of the virus dies on contact with them. Even more dangerously, if this virus combines with the cholera virus, the world will become hell.
Fifteen years ago, when the renowned journalist and writer Gao Ailian was murdered, Yu Xiangyang was the one who provided the lead. In the present, Yu Xiangyang is once again working with the entrepreneur Liang Weida, who was Gao Ailian's first love.
The police and the criminals match wits in a battle of brains and courage.
