1. Percy Jackson discovers he's a demigod: Percy learns he's the son of Poseidon, the Greek god of the sea, after a series of strange occurrences and a terrifying encounter with a Fury.
2. Percy is accused of stealing Zeus' lightning bolt: Percy is framed for the theft of Zeus' lightning bolt, setting off a conflict between the Olympian gods.
3. Percy embarks on a quest to clear his name: With his friends Annabeth Chase (daughter of Athena) and Grover Underwood (a satyr), Percy sets out on a perilous journey to find the real thief and clear his name.
4. Percy faces various mythical creatures and challenges: They encounter monsters like the Minotaur, Medusa, and the three-headed dog Cerberus. Percy uses his powers and wits to overcome these obstacles.
5. Percy discovers his true potential: Percy struggles with his powers and discovers his true potential as a demigod, learning to control the water and fight with a sword.
6. Percy faces betrayal and heartbreak: Luke Castellan, Percy's supposed friend and son of Hermes, betrays them, revealing himself as the real thief and working for Kronos.
7. Percy confronts the real thief and finds the lightning bolt: Percy confronts Luke and discovers the lightning bolt was hidden in a secret lair, revealing Luke's motive.
8. Percy confronts his father, Poseidon: Percy confronts his father, Poseidon, about his fears and the fact that he's chosen to live with humans. Poseidon expresses his pride and support.
9. The Olympian gods acknowledge Percy's innocence: The gods acknowledge Percy's innocence and realize Luke is the true culprit, preventing an all-out war.
10. The war against the Titans begins: Luke, now fully aligned with Kronos, escapes, signaling the beginning of the war against the Titans.
These events lay the foundation for the entire *Percy Jackson & The Olympians* series and set the stage for the complex and exciting mythology-based world created by Rick Riordan.