Arturo Cifuentes reappears one day in the narrator’s life like a ghost from the past. He is an old university friend with whom the narrator shared a flat in New York. Seventeen years have passed since the last time they met, Cifuentes has divorced and returned to Spain to take up a post at the faculty where they studied. He has a lot to tell: his relationship with his teenage son, the crisis in his marriage, his ill-fated professional wanderings and, above all, his profound disillusionment with the university. The narrator does not suspect, however, that his old friend wants to make a more significant proposal that will affect them both: to unmask the jokers and uncover the roots of an old, everlasting consipiracy.