In an alternate reality, Fidel Castro uses genetic engineering to build the new man and thus save utopia. The experiment fails as these beings are highly intelligent but also cruel and uncontrollable. Rejected by their own creators, a group organizes a series of terrorist actions, and chaos reigns on the island. One of its members traces the origin of their genes and begins a journey to try to discover their humanity.

Walfrido Larduet, a lonely electrical inspector, dreams of the Red Woman, whose image persists and becomes an obsession. Something tells him she is near. Over the course of a day, Walfrido will follow her trail as he travels through the suburbs of an infested city.