Percy Jackson Book 3 Chapters 17-20

Percy, Annabeth, Grover, and Tyson arrive at Miami Beach, aided by a hippocampus.
Clarisse is sent back to Camp Half-Blood with the Golden Fleece as per her mission.
Luke captures the group and reveals he poisoned the sacred tree.
An iris message shows Mr. D sending Tantalus back to the Underworld just before a meal.

Percy confronts Luke, but Luke overpowers him.
Orieus, a creature, lifts Annabeth and Grover, but falls apart as a red-feathered arrow emerges from his mouth.
Chiron and other centaurs rescue the children from Princess Andromeda.
Chiron reveals to Percy that Kronos is his father.

The group arrives at Long Island where Clarisse places the Golden Fleece onto Thalia's tree, reviving it.
Chiron announces a chariot race, uniting the campers.
Percy has a reunion with Hermes, who discusses Luke’s activities.
Apollo delivers a blue envelope containing a cautionary letter from Poseidon to Percy.

Percy struggles with sleep, haunted by Poseidon's warning to "brace yourself."
The next day, he, Annabeth, and Tyson prepare for the chariot race, with Tyson designing their chariot.
Despite feeling neglected by Poseidon, Tyson gifts Percy a wristwatch that transforms into a shield.
The race begins; Percy and Annabeth lead, ultimately winning against Clarisse and Hephaestus.
Percy affectionately calls Tyson his baby brother, and Annabeth kisses him on the cheek.

Thalia is resurrected as a human, but Percy hesitates to sever their empathy link.
The police have stopped searching for Percy, ensuring his safety.
Percy's mother checks in on him, and he opts to remain at camp for training.
Tyson is invited by Poseidon to work in the underwater cyclops forges.
Percy continues to experience troubling dreams about Kronos.