The second book of the novel tells about events that occurred AFTER the completion of Heracles’—really both twin brothers’—twelve well-known labors (the labors themselves are touched only partially).
Now Heracles faces the most difficult of the labors: to defeat himself, to overcome the madness that has settled in the hero’s soul. Even all-powerful gods cannot, and do not really strive, to help him with this; for the gods, Heracles is needed only as a weapon in the upcoming apocalyptic battle with the tribe of giants—invulnerable to Olympians, but vulnerable to a mortal.
…And then the hour of the decisive battle arrives. Both sides play their “trump cards”—and in front of Heracles finally appear, in flesh, the very mad nightmares that have tormented him all these years…