Percy Jackson and the Olympians season 2 episode 4 ending explained: Did Percy, Annabeth, and Tyson join Clarisse?

Percy Jackson and the Olympians season 2 arrives at a pivotal turn in episode 4, titled “Clarisse Blows Up Everything,” as Percy, Annabeth, and Tyson end up joining Clarisse on her quest to the Sea of Monsters in search of the Golden Fleece. Initially, Clarisse intends to remove them from her mission and proceed with her own crew.

That plan changes when Annabeth argues that their presence serves a purpose. She brings knowledge of the quest and its risks, Percy offers the advantage of being Poseidon’s son, and Tyson contributes his understanding of machines and inventions. The episode confirms their reluctant alliance aboard Clarisse’s ship, setting all parties on the same course while leaving questions about control, trust, and consequence unresolved.

Disclaimer: This article contains major spoilers. Read at your own discretion.

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Did Percy lose the single combat in Percy Jackson and the Olympians season 2 episode 4?

Percy Jackson and the Olympians season 2 (Image via Disney Plus)

Clarisse tracks Percy, Annabeth, and Tyson to a hideout and surrounds them with her crew. She demands the coordinates to the Sea of Monsters. Percy responds with defiance and proposes single combat. The offer fits his instincts. Clarisse accepts without hesitation.

Whoever wins is not determined by the battle. Despite Percy's resoluteness, Clarisse views the duel as an unfair evaluation. She has already decided that her team is superior to Percy's. The events that follow are shaped by her self-assurance.

Annabeth identifies the three crew members that Clarisse says can take over for Percy, her, and Tyson. In just a few seconds, she gets rid of them. The move changes things. Clarisse now has a bigger problem and fewer people to help her. Now, she can't afford to lose the group with Percy. Clarisse allows them to come on board as she has no other option.

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Annabeth remembers Thalia’s sacrifice

Annabeth’s flashbacks anchor the emotional weight of Percy Jackson and the Olympians season 2 episode 4. The episode opens with Annabeth in a hidden place tied to her past. The bracelet and the wooden box trigger memories of Luke, Thalia, and Grover before Camp Half-Blood. These scenes do not function as exposition but explain Annabeth’s restraint and urgency.

The flashbacks reveal how Thalia protects Annabeth at every turn. She rescues her from cyclops. She orders Grover to take Annabeth to safety. She stays behind when the furies attack. Thalia’s sacrifice does not appear on screen in full, but the meaning remains clear. Thalia chooses loss so others can survive.

That history informs Annabeth’s decisions on Clarisse’s ship. When faced with Scylla and Charybdis, Annabeth initially supports the plan that minimizes chaos, even if it demands sacrifice. Her logic reflects experience. She understands what it means to survive because someone else does not.

The ending reinforces this connection. Annabeth attempts to control the situation with Hermes’s thermos. However, the thermos falls, and the explosion traps Tyson. The moment mirrors her past trauma. Control slips away. Slowly, the ship is destroyed.

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Why does the Golden Fleece quest change once Clarisse chooses to fight Charybdis?

Percy Jackson and the Olympians season 2 (Image via Disney Plus)

The final act of Percy Jackson and the Olympians season 2 episode 4 unfolds during the voyage toward the Golden Fleece. They decided to face the Scylla and sacrifice six of Clarisse's men. However, Clarisse had a change of heart and eventually refusing to run from monsters. She turns the ship toward Charybdis instead.

The attack on Charybdis causes turmoil right away. The ship gets damaged. Water floods critical areas. Percy tries to steer the ship in a different direction. Annabeth utilises the thermos to harness the wind. The scenario doesn't get any better. The explosion in the boiler room is going to happen.

Tyson being there makes things more dangerous. We don't know what will happen to him when the show ends. This moment alters the quest for the Golden Fleece. It's not only a mission to save Camp Half-Blood anymore. It turns into a test of leadership and what happens next.

Episode 4 of Percy Jackson and the Olympians season 2 is a warning. Power without limits leads to calamity. Planning without care leads to loss. Clarisse's decision to battle Charybdis rather than endure Scylla alters the moral core of the mission.

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Percy Jackson and the Olympians season 2 episode 4 is now streaming on Disney+. Viewers can watch the episode to see how the alliance forms, how the cliffhanger lands, and where the quest for the Golden Fleece continues next.

Edited by Bea Melisse Ibañez