In the relentless heat of the Paleocene, Kael, a fisherman of the Cerrejón swamps, faces an ancient nightmare, the Titanoboa, "The Sleeper." After surviving a devastating attack that cost him everything, Kael must navigate his trauma, his guilt, and the humid, terrifying river to protect his village from the 50-foot terror that rules the Age of Steam. This is a visceral story of primitive survival and the high price of life.