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Heroes of Olympus is an Award-winning bestselling series created by the Author: Rick Riordan. It is the sequel series of Percy Jackson and the Olympians. It consists of 5 books based on a Great Prophecy, famously known as the Prophecy of the Seven.


The Camp is in mayhem as their leader Percy Jackson has gone missing. Annabeth rescues three demigods, a son of Zeus, Jason, a son of Hephaestus, Leo and a daughter of Aphrodite, Piper.

Jason has been brainwashed and Leo’s and Piper’s brain has been modified to think that they have been friends with Jason forever. They go on a quest to save Hera from the evil clutches of the giants.


The book ends by Jason remembering that he is actually a Roman demigod, the son of Jupiter and tells everyone in Camp Half-Blood about what all he has remembered and Leo starts building an air-battle ship.

After this, the succeeding book then shows that Percy has been brainwashed and sent into a Camp of Roman demigods called “Camp Jupiter”. There he is set on probation and tries to get into the Legion. Percy meets Frank, an unclaimed demigod and Hazel, a daughter of Pluto.

After playing the war games, Mars comes to meet the Camp and tell them that a quest is needed and that his son, Frank would be the one leading the quest. Frank chooses Percy and Hazel to go with his and the trio then go to the Land Beyond the Gods, or simply Alaska, and defeat a giant and free Thanatos, which was their main goal.

They also bring back the Legion’s eagle and Percy is made a praetor and this book ends by Percy remembering that he is Greek.

The rest of the series tells how Percy, Annabeth, Jason, Piper, Frank, Hazel and Leo go in the ship Leo has made, named as the Argo II, With the main aim of stopping the Primordial of Earth, from waking up with the help of her children, and destroying everything. They together face many challenges, including when Annabeth meets Arachnid and Nico, who the save, takes the Athena Parenthos to Camp Half-Blood and when Percy and Annabeth fall together in Tartarus.

After they reach the forbidden ancient lands of Greece, the final battle takes place with the Gods and the heroes against the evil giants who what to wake Gaia, the primordial of Earth. Gaia wakes up but Leo takes her to the realm of Ouranos, the primordial of Sky and blasts her, sacrificing himself in this process. The book ends when Leo is resurrected (but the rest of the seven do not know) and he goes to find Calypso to free her from her curse.



  • Percy Jackson
  • Annabeth Chase
  • Leo Valdez
  • Piper McLean
  • Hazel
  • Frank Zhang
  • Jason Grace
  • Thalia Grace
  • Hunters of Artemis
  • Reyna
  • Nico di Angelo


  • Gaia
  • Giants
  • Earthborns
  • Monsters

The Prophecy of The Seven

This is the Prophecy on which the whole series was based:

Seven half-bloods shall answer the call.

To storm or fire, the world must fall.

An oath to keep with a final breath,

And foes bear arms to the Doors of Death.

Previous Series: Percy Jackson and the Olympians

Next Series: Trials of Apollo