Zeus and his friends are back for another adventure in this latest Heroes in Training chapter book Since defeating the Titans Zeus and his fellow Olympians have taken over Mount Olympus. Things are nearly back to normal...until a stranger named Hercules shows up asking for help. Hes on the run from Eurythseus King of Argon who is after Hercules for egging his temple. Before Zeus can help Eurythseus himself appears. It turns out that Hercules has also been bragging that he is the ruler of Olympus and Eurythseus intends to declare war on the Olympians new home. Zeuss friends come up with an ideamaybe Hercules could make up for egging Eurythseuss temple. The Oracle Pythia reveals that in order to do this Hercules must get a scale from a huge nineheaded serpentthe Hydra. Will this be enough to please Eurythseus Or is another battle on the horizon for the Olympians show more