Plot Analysis Summary
A community of divers confronts poverty, betrayal, criminal power, and violent rivals through increasingly dangerous underwater smuggling.
Story Structure — 5 Plot Phases
Polluted Waters, Hidden Profits
The divers of Guncheon face poverty after industrial pollution destroys their catches. They accept underwater smuggling and briefly restore prosperity to the village.
Key Events
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Polluted Guncheon Waters — Pollution from a chemical plant ruins the divers' catches and threatens the village economy.
Location: Guncheon
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The First Smuggling Offer — A smuggling broker persuades the fishing crew to retrieve underwater goods for money.
Location: Guncheon harbor
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Village Prosperity — The divers' new work brings sudden prosperity to the impoverished coastal village.
Location: Guncheon
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The Gold Operation — The divers secretly accept a riskier gold-smuggling mission after the captain refuses to participate.
Location: Offshore waters
Gold Beneath The Waves
A secret gold operation goes wrong when customs officers arrive. The captain dies, the crew is imprisoned, and a lasting suspicion of betrayal takes root.
Key Events
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Customs Interception — A broken box exposes the gold as customs officers arrive, triggering a desperate escape.
Location: Offshore waters
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The Crew Is Arrested — The anchor becomes stuck, a crew member is injured, the captain dies, and the remaining divers are arrested.
Location: Guncheon
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A Vow Of Revenge — The imprisoned diver learns that her former partner escaped and vows revenge for the suspected betrayal.
Location: Prison
Old Enemies Reunited
Years later, Chun-ja returns with Kwon Pil-sam and reopens the Guncheon route. Her reunion with Jin-sook is dominated by resentment and mistrust.
Key Events
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Kwon Captures Chun-ja — Kwon Pil-sam captures and tortures Chun-ja after she encroaches on his Seoul territory. Characters: Kwon Pil-sam
Location: Seoul
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Guncheon Route Bargain — Chun-ja offers Guncheon as an alternative route because police monitoring has tightened elsewhere. Characters: Kwon Pil-sam
Location: Seoul hideout
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Return To The Village — Kwon Pil-sam and Chun-ja return to Guncheon and force the former diving community into cooperation. Characters: Kwon Pil-sam
Location: Guncheon
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The Old Grudge Resurfaces — Jin-sook confronts Chun-ja while Kwon's operation begins in the old community. Characters: Kwon Pil-sam
Location: Guncheon harbor
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The Truth About Escape — Chun-ja explains that she did not betray the crew and had hidden after stabbing a rapist. Characters: Kwon Pil-sam
Location: Guncheon
The Informant's Secret
The divers use a decoy shipment to mislead customs. Evidence eventually identifies the real betrayal and allows Chun-ja and Jin-sook to reconcile.
Key Events
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The Truth About Escape — Chun-ja explains that she did not betray the crew and had hidden after stabbing a rapist. Characters: Kwon Pil-sam
Location: Guncheon
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The Mussel Decoy — A decoy boat carrying only mussels draws customs officers away from the hidden smuggling operation. Characters: Kwon Pil-sam
Location: Coastal waters
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The Real Betrayal Revealed — Evidence reveals that the former crewmember collaborated with the customs officer during the earlier gold operation. Characters: Kwon Pil-sam
Location: Guncheon
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A Dangerous Partnership — Kwon Pil-sam proposes partnering with Chun-ja and the diving crew while planning to eliminate Do-ri. Characters: Kwon Pil-sam
Location: Smuggling hideout
Diamonds And Double Crosses
Rival smugglers turn against one another while the women are forced into a diamond recovery operation. The divers defeat their attackers underwater and eliminate Do-ri.
Key Events
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The Hideout Assault — Do-ri and his men attack unexpectedly, forcing Kwon Pil-sam and Chun-ja to flee. Characters: Kwon Pil-sam
Location: Smuggling hideout
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Kwon's Final Stand — Kwon Pil-sam dies after an intense fight with Do-ri and his remaining men. Characters: Kwon Pil-sam
Location: Hideout grounds
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The Diamond Bargain — Chun-ja bargains for her life by offering a shipment of diamonds worth three hundred million dollars.
Location: Coastal hideout
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Enemies Turn On Each Other — A false accusation provokes customs officers to raid Do-ri's hideout and discover the planted informant document.
Location: Customs office
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The Diamond Dive — The divers retrieve the diamonds, defeat the underwater attackers, and turn the boat's equipment against Do-ri.
Location: Open sea
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Sharks Take Do-ri — Do-ri falls into the water, begs for rescue, and is devoured by sharks after Jin-sook refuses him.
Location: Open sea
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The Crew Survives — The surviving divers complete the final confrontation and retain control of the recovered diamonds.
Location: Guncheon waters