Raquel is a girl who has nightmares and calls her parents to dispel her fears. One such night, her mother, Reyes, invents a story about a man who had two hearts so that the girl can sleep: but the story carries on developing in Raquel and Reyes’ dreams.

The man with two hearts wants to discover whom is second heart is from and so embarks on a journey in which he will have many adventures and share them with Reyes and Raquel, and that will carry them off to discover unimaginable worlds. The author’s fantasy and originality make this novel a consuming tale, which traps the reader and in the end transforms him or her into one of the story’s protagonists.