Story Structure — 4 Plot Phases
The Birth of Vengeance
Kang-woo forms Mad Dog team after personal tragedy, driven by grief and the need for truth.
Key Events
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Family Tragedy — Kang-woo loses his wife and son in the crash Characters: Choi Kang-Woo, Kim Beom-Joon
Location: JH 801 Airplane
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Mad Dog Formation — Kang-woo assembles his investigation team Characters: Choi Kang-Woo, Jang Ha-Ri, Park Soon-Jung, On Noo-Ri, Cha Hong-Joo, Park Moo-Shin, Byun Guk-Jin, Choi Joo-won
Location: Mad Dog Office
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Min-Joon Recruitment — Kang-woo recruits Min-joon to the team Characters: Choi Kang-Woo, Kim Min-Joon
Location: Police Station
Unlikely Alliance
Kang-woo recruits Min-joon, discovering his connection to the crash and forming an uneasy partnership.
Key Events
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Min-Joon Recruitment — Kang-woo recruits Min-joon to the team Characters: Choi Kang-Woo, Kim Min-Joon
Location: Police Station
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Brother Revelation — Min-joon reveals he's Beom-joon's brother Characters: Choi Kang-Woo, Kim Min-Joon
Location: Mad Dog Office
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Initial Investigation — Team begins investigating the crash Characters: Choi Kang-Woo, Kim Min-Joon, Jang Ha-Ri, Park Soon-Jung
Location: JH 801 Crash Site
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First Clue Discovery — Min-joon finds suspicious evidence Characters: Kim Min-Joon, On Noo-Ri
Location: Evidence Lab
Chasing Shadows
The team begins their investigation, facing resistance and uncovering the first hints of a cover-up.
Key Events
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First Clue Discovery — Min-joon finds suspicious evidence Characters: Kim Min-Joon, On Noo-Ri
Location: Evidence Lab
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Cover-Up Attempt — Hyun-Ki tries to stop the investigation Characters: Choi Kang-Woo, Joo Hyun-Ki
Location: Government Building
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Team Division — Team faces internal conflict about investigation direction Characters: Choi Kang-Woo, Kim Min-Joon, Cha Hong-Joo, Park Moo-Shin
Location: Mad Dog Office
Truth Revealed
The team discovers the truth about the crash, confronts those responsible, and seeks justice.
Key Events
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Critical Breakthrough — Team discovers crucial evidence Characters: Kim Min-Joon, Byun Guk-Jin, Choi Joo-won
Location: Secret Archive
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Final Confrontation — Team confronts those responsible for the crash Characters: Choi Kang-Woo, Kim Min-Joon, Joo Hyun-Ki, Park Soon-Jung
Location: Abandoned Warehouse
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Justice Served — Truth about the crash is revealed Characters: Choi Kang-Woo, Kim Min-Joon, Jang Ha-Ri, Park Soon-Jung, On Noo-Ri, Cha Hong-Joo, Park Moo-Shin, Byun Guk-Jin, Choi Joo-won
Location: Courtroom
Choi Kang-Woo is a former detective, but he now works as a veteran insurance investigator. He leads a team that attempts to reveal insurance fraud cases.