The trio battles Medusa and receives assistance from a water spirit.
The group is tricked by Ares, escapes the Lotus Casino, and continues to the Underworld. Part 4: Into the Underworld (Chapters 17-20) The trio battles Medusa and receives assistance from
Percy learns Chiron is his trainer, discovers his water-based powers, and makes friends like Annabeth. escapes the Lotus Casino
Percy is claimed as a son of Poseidon and is assigned a quest to find Zeus's stolen master bolt. Part 3: The Quest to the West (Chapters 10-16) discovers his water-based powers