1. Percy Jackson's amnesia: The story begins with Percy waking up with no memory and a mysterious tattoo on his wrist. This sets the stage for the quest to reclaim his memories and identity.
2. Meeting Annabeth Chase: Percy finds himself in a strange camp and meets Annabeth, who initially treats him with suspicion due to his amnesia and the strange tattoo.
3. The arrival of Tyson: Percy's half-brother, Tyson, a Cyclops, arrives, bringing news of his lost memories and revealing Percy's father is Poseidon.
4. The attack on Camp Jupiter: The camp is attacked by a monstrous creature called the Fury, which sets off a chain of events that Percy and his friends must face.
5. Percy and Annabeth's journey to find the missing legionaries: After the attack, Percy, Annabeth, and Tyson set out on a quest to find the missing legionaries, including Hazel Levesque.
6. Percy discovering his connection to the Roman god Neptune: As Percy explores his past, he begins to understand his connection to the Roman god Neptune and his role in the prophecy.
7. The encounter with the giant, Polybotes: The group faces a giant, Polybotes, who is trying to break the seals holding him captive. This encounter highlights the growing threat posed by the giants.
8. Hazel's transformation: Hazel, a daughter of Pluto, learns to control her powers and her connection to the underworld.
9. The retrieval of the Athena Parthenos statue: Percy and his companions embark on a perilous journey to retrieve the Athena Parthenos statue, a crucial artifact that could save Camp Jupiter from an impending attack.
10. The encounter with the giant, Typhoeus: The group confronts Typhoeus, a giant of immense power and the leader of the giant rebellion. This encounter reveals the immense scale of the threat facing the gods and demigods.
11. The battle at the Colossus: Percy and his companions fight alongside the Roman legions and demigods in a desperate battle to defend Camp Jupiter against Typhoeus and his forces.
12. Percy's confrontation with the Fury: Percy faces the Fury, a powerful force that has been manipulating events to bring about the giant rebellion.
13. The return of Percy's memories: During the battle, Percy's memories slowly return, revealing his role in the prophecy and the reason for the giant's attacks.
14. Percy's acceptance of his identity as the son of Neptune: Through facing challenges and rediscovering his past, Percy fully embraces his identity as the son of Neptune.
15. The prophecy's fulfillment: The battle ends with the defeat of Typhoeus and the fulfillment of the prophecy, but not without sacrifices and consequences that will impact the future of the demigods.
It's important to note that these events are interconnected and contribute to the overarching story of Percy's journey to reclaim his memories and fulfill his destiny as the son of Neptune.