logo

67 pages 2 hours read

The Lightning Thief

Fiction | Novel | YA | Published in 2005

A modern alternative to SparkNotes and CliffsNotes, SuperSummary offers high-quality Study Guides with detailed chapter summaries and analysis of major themes, characters, and more.

Chapters 20-22Chapter Summaries & Analyses

Chapter 20 Summary: “I Battle My Jerk Relative”

Back on land, Ares has Hades’s helm. Ares reveals his plan to use Percy to start a war among the gods. The backpack he gave Percy is the lightning bolt’s sheath disguised. Like Riptide, the bolt would return to it, but Ares rigged it so the bolt would only come back once Percy was in the Underworld. Percy asks why Ares didn’t just keep the bolt, and Ares pauses “as if he were listening to another voice, deep inside his head” (323). Percy realizes the thing in the pit—whatever it is—used Ares, too. Percy battles Ares and tricks him into the ocean to deliver a massive blow. Something powerful stops Ares from killing Percy. Ares curses Percy to fail in battle and disappears.

The Furies arrive, having seen the entire confrontation. Percy returns Hades’s helm to them and orders them to tell Hades “to call off the war” (331). The Furies agree and fly away.

Chapter 21 Summary: “I Settle My Tab”

Percy, Annabeth, and Grover fly to New York, where Percy goes up to Mount Olympus by himself. After riding the Empire State Building elevator to the 600th floor, Percy finds a shining city of mansions atop a snow-capped mountain. He traverses the road to the god’s palace on the mountain’s peek, where Zeus and Poseidon wait in a tense silence, “as if they'd just finished an argument” (340).

Percy tells Zeus about his quest, including the voice from Tartarus and how Ares was also being used. The thing in the pit is Kronos, father of the Titans, as well as of Zeus and Poseidon. Zeus forbids further discussion on the topic and disappears. Percy tries to tell Poseidon that Kronos aims to return from his imprisonment, but Poseidon shuts down the conversation. He tells Percy to go home and that Hades sent Percy’s mother there. Percy will find a package in his room and must make a decision. With the beginnings of a tentative relationship with his father, Percy leaves Mount Olympus.

At home, Percy tearfully reunites with his mother. Gabe, his stepfather, threatens Percy and raises a hand to Percy’s mom. In his room, Percy finds the box he sent to Mount Olympus containing Medusa’s head. He offers to turn Gabe to stone, but his mother refuses. She wants to deal with Gabe her way for the same reason she didn’t stay with Poseidon: “If my life is going to mean anything, I have to live it myself” (352). Percy agrees and leaves for Camp Half-Blood, unsure if he’s going forever or just for the summer.

Chapter 22 Summary: “The Prophesy Comes True”

Camp Half-Blood celebrates Percy, Annabeth, and Grover’s successful return with a huge party. Percy moves back into his cabin. With his new friends and father’s approval, the cabin doesn’t “feel so lonely anymore” (355). The rest of the summer is one of the best Percy’s ever had. When fall comes, he still can’t decide whether to stay for the entire year. He goes to the practice arena to clear his thoughts and finds Luke demolishing the practice dummies in an incredible show of swordsmanship. Luke takes Percy into the forest to hunt monsters. Once they are alone, Luke reveals he stole the lightning bolt and helm. Luke serves Kronos and has turned on Camp Half-Blood. He leaves Percy with a poisonous scorpion bite and flees camp.

Percy falls unconscious. When he wakes, he’s in the camp hospital with Chiron and Annabeth. He explains Luke’s betrayal and how Kronos is working toward regaining his power. Chiron starts to tell Percy about another prophesy, but a rumble of thunder from Olympus stops him. Chiron advises Percy to rest and goes to Olympus. When he’s gone, Annabeth tells Percy she’s going home for the year to give her family another chance. She leaves, and Percy makes his decision. With a final look at Camp Half-Blood, he promises Poseidon he’ll “be back next summer” and packs to go home (375).

Chapters 20-22 Analysis

In Chapter 20, we see just how powerful Kronos is. The titan influences both humans and gods alike, planting suggestions about the lightning bolt and helm in Ares’s mind. After Percy strikes Ares, the god makes ready to destroy Percy, but Kronos stops him. Even weakened and imprisoned, Kronos has enough power to stop the war god from committing violence, something that comes naturally to Ares. Riordan leaves Kronos’s threat unresolved for further installments in the series, but the last action we see from Kronos promises his threat will be great. Kronos also lets Percy live, suggesting the titan has plans for Poseidon’s son.

The true meaning of the prophesy comes to light in these chapters. The turncoat god is Ares, not Hades. In addition to the lightning bolt, Percy also recovers Hades’s stolen helm. The betrayer is Luke, a revelation that was foreshadowed by the cursed sneakers and Luke’s discontentment with both Hermes and the gods in general. Percy fails to save his mother—the thing that matters most to him. Hades delivers her home, showing that, while the gods may be impulsive and childish, they will be fair when fairness is due.

In addition to Kronos, Riordan leaves mysteries unsolved for further books in the series. Ares curses Percy to fail in battle, something we don’t see the result of in this book. Given that Percy battles with Riptide (a sword), it’s likely the curse will have a large impact later on. The final pages show Percy and Annabeth readying themselves for a summer in the human world. Both make decisions that will help them grow, and in the final paragraph, Percy promises camp and Poseidon that he’ll be back in the fall to deal with whatever comes next.

blurred text
blurred text
blurred text
blurred text
Unlock IconUnlock all 67 pages of this Study Guide

Plus, gain access to 8,800+ more expert-written Study Guides.

Including features:

+ Mobile App
+ Printable PDF
+ Literary AI Tools