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TL;DR: Jason wakes up on a school bus with no memory, holding hands with a girl named Piper and next to a boy named Leo who says he is his best friend. Within hours, the three are attacked by storm spirits and taken to Camp Half-Blood. They learn they are demigods and are sent on a quest to rescue Hera, queen of the Greek myths, while an ancient enemy, Gaea, begins to wake.
Table of Contents
The Lost Hero at a Glance
| Author | Rick Riordan |
| First published | 2010 |
| Type | Fantasy |
| Best for | young readers who want a fresh start in the Percy Jackson world with new heroes |
The Lost Hero is the first book in Rick Riordan's The Heroes of Olympus series, published in 2010. It is told by three narrators: Jason, Piper and Leo. Below you will find a part-by-part summary, five key takeaways, ideas worth remembering and a note on who will enjoy it.
Content note: Includes fantasy violence and monsters.
Main Characters
- Jason Grace: A demigod with no memory.
- Piper McLean: A girl with the power of charmspeak.
- Leo Valdez: A mechanical genius who can create fire.
- Annabeth Chase: A camper searching for Percy.
- Gaea: The earth spirit of myth, beginning to awaken.
What Happens, Part by Part (Contains Spoilers)
Lost memories
Jason wakes on a school trip to the Grand Canyon with no memory. Piper believes he is her boyfriend, and Leo thinks he is his friend, but their memories are false. Storm spirits attack, and Jason fights with a golden sword. Annabeth arrives looking for Percy Jackson, who is missing, and brings the three to Camp Half-Blood.
Claimed
At camp, the three are claimed by their immortal parents. Piper can “charmspeak,” persuading people with her voice. Leo can create fire and build machines. Jason has strong powers and strange tattoos. Hera, held in a cage, sends Jason a vision. The three are given a quest to rescue her before the winter solstice.
The quest
Leo finds a bronze dragon named Festus, and the three fly across America. They face monsters such as Medea, King Midas and the Cyclopes. They meet Boreas, the North Wind, and his children. Piper struggles with a secret: the giant Enceladus holds her father captive and wants her to betray her friends.
Truth
Jason learns that he is Roman, not Greek, and the son of Jupiter, the Roman version of the sky's ruler. His memory was taken by Hera. Leo learns that his mother died in a fire, and he blames himself. Piper decides to tell her friends the truth, and they help rescue her father.
The Wolf House
At the Wolf House in California, Jason, Piper and Leo defeat the giant and free Hera. They learn that Hera swapped Jason with Percy Jackson, who is now in a Roman camp with no memory. A great war with Gaea and the giants is coming. Leo plans to build a flying ship, the Argo II, to unite the two camps.
5 Key Takeaways
- Identity is more than memory.
- Friendship can be built quickly in danger.
- Honesty helps teams succeed.
- Everyone has unique gifts.
- Old enemies can return.
Ideas Worth Remembering
These are paraphrased, not direct quotes:
- You can choose who you become.
- Grief can be shared and healed.
- Different strengths make a strong team.
Who Should Read The Lost Hero?
Read The Lost Hero if you enjoyed Percy Jackson and want new characters and adventures. It suits ages 9 to 14.
About Rick Riordan
Rick Riordan (born 1964) is an American author whose books draw on Greek, Roman, Egyptian and Norse myths. The Heroes of Olympus series has five books and continues the Percy Jackson story. He has won many children's choice awards, and his books have been translated into more than 40 languages.
Questions to Think About After Reading
These prompts work for solo reading, a book club or a classroom discussion of The Lost Hero:
- How does Jason's memory loss affect him?
- What secret does Piper keep, and why?
- How does Leo's past shape him?
How to Use This Summary
Use this page as a quick reference before a book club meeting, an exam, or a decision about whether The Lost Hero is worth your time. The takeaways are written to stand on their own. If a point interests you, go back to the book for the author's full story, characters and style, which no short summary can replace.
A Note on Accuracy and Spoilers
This summary is based on the published text of The Lost Hero, not on any film, series or stage adaptation, which often change the story. Details are kept at the level of the main events so that nothing is invented. Editions differ slightly in length and wording, so page numbers and small details may vary between copies.
Should You Read the Book?
Yes. It is fun, fast and introduces great new heroes.
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What to Read Next
- The Son of Neptune by Rick Riordan: the second Heroes of Olympus book
- The Last Olympian by Rick Riordan: the end of the first Percy Jackson series
- The Red Pyramid by Rick Riordan: Egyptian mythology adventure
Related: Rick Riordan Books in Order Printable List · The Last Olympian by Rick Riordan: Summary and Key Takeaways
Frequently Asked Questions
What is The Lost Hero about?
Three new demigods go on a quest to rescue Hera.
Who wrote it?
Rick Riordan, in 2010.
Who is Jason Grace?
A Roman demigod who has lost his memory.
Who is Piper McLean?
A girl who can charmspeak.
Who is Leo Valdez?
A mechanical genius who can create fire.
Who is Gaea?
The earth spirit of myth, waking up as an enemy.
Where is Percy?
At a Roman camp, without his memory.
What age is it for?
About 9 to 14.
How long is it?
About 550 pages.
Do I need to read Percy Jackson first?
It helps, but it is not required.
What is the Argo II?
A flying ship Leo builds.
What comes next?
The Son of Neptune.
Who narrates?
Jason, Piper and Leo, in turns.
Is The Lost Hero worth reading?
It depends on what you want. The book is best for young readers who want a fresh start in the Percy Jackson world with new heroes. If that describes you, it is likely a good fit. If not, the titles under What to Read Next may suit you better.