Nine streams flowed into Lerna, and each had a head - now Lerna is gone. The golden age of heroes has ended, two hundred years have passed since the death of Hercules, the legendary ship "Argo" stands unfinished and is covered with dust. The exiled prince Jason hurries to his hometown of Iolk to take back his father's lost throne from the hands of his treacherous uncle. But does a young heart want the throne, and what to do with the rotten swamp that is consuming the lands of Greece?