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Hitman: Agent Jun (2020) movie poster

Plot Summary

Hitman: Agent Jun (2020) Plot Summary Explained

Release, runtime and language
2020 · 110 mins · Korean
Echo score 68
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Directed by
Choi Won-sub
Starring
Lee Jun-hyeok, Jung Jun-ho, Hwang Byeong-gug, Kwon Sang-woo, Lee Sang-won, Lee Yi-kyung

A struggling webtoon artist unwittingly draws danger when his story reveals secrets from his past life as a highly trained superspy. Now, the artist must use his forgotten skills to protect himself and confront the forces seeking retribution for his past actions. He finds himself in a precarious situation, balancing his new life with the resurfacing threats from his former profession.

On this page (5)
  1. 1 Where to watch
  2. 2 What happens: full plot
  3. 3 Plot questions answered
  4. 4 Movie threads
  5. 5 Every angle
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Full plot summary · contains spoilers

What Happens in Hitman: Agent Jun: Full Plot Summary

The whole story of Hitman: Agent Jun (2020) explained, from the opening scene to the final frame: every key event, every twist and what it all adds up to. Read it as a quick recap before the sequel, to check a scene you missed, or to finally understand what really happened.

Jun, Kwon Sang-woo, a webtoon artist who also works at a construction site, is unnerved by harsh feedback that his comics aren’t “fun and entertaining.” In a drunken burst of inspiration, he creates a webtoon about a secret agent, and the work explodes into a massive success. The sudden triumph brings warmth to Jun’s family as they finally rise from obscurity, but it also reveals a troubling truth: the webtoon is essentially drawn from Jun’s own life as a secret agent, a realization that threatens to pull his world apart.

Past: Jun, an orphan with impressive fighting and drawing skills, is recruited to become an NIS agent. Jung Jun-ho portrays Cheon Deok-gyu, the key figure who spots his potential and pushes him toward elite status. Despite the intensity of duty, Jun’s passion for webtoons persists, and he sketches during his spare moments. Believing that occasional drawings won’t fulfill his true goal, Jun fakes his death by leaping from a helicopter on a stormy night, then disguises himself to pursue life as a webtoon artist.

Present: In the present, Jun becomes aware of his family’s precarious situation and quickly releases the next episode of his webtoon. The NIS soon discovers that the episode mirrors a real, top-secret operation, confirming that Jun is alive. Jason, his longtime nemesis in the series, calls with a hostage demand that requires bringing Chief Cheon to the location. The agency closes in, and Jun’s daughter is seized in the confrontation.

The chase intensifies as Cheol escapes with Jun’s daughter and makes for Jun’s whereabouts. Lee Yi-kyung portrays Cheol, a former colleague who ultimately joins forces with Jun. Together with Chief Cheon, they track Jason’s hideout and stand against the danger Jason represents, a man bent on vengeance for his brother’s death at Jun’s hands. The pursuit culminates in a confrontation that ends Jason’s control over the situation and removes his threat.

With Jason defeated and the misunderstanding cleared, Jun is exonerated and returns to a peaceful life with his family. He resumes writing the third episode of the webtoon, stepping forward into a quieter chapter while rekindling the creative fire that started it all. Jun’s resolve to protect his loved ones remains steady as the story continues to unfold, blending action, memory, and imagination into a new era for his art. Lee Ji-won (Kim Ga-yeong) appears in the narrative as Jun’s daughter, a reminder of the stakes that tether his two worlds together.

Last updated: October 14, 2025 at 04:07

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Plot questions answered

Hitman: Agent Jun Plot Explained: Your Questions Answered

The questions people ask most about Hitman: Agent Jun (2020): what happens in the confusing scenes, why the characters do what they do, the twists, hidden details and what the ending means. Each answer contains spoilers.

Q1

Why did Jun fake his death and leave the NIS?

Jun faked his death because he wanted to pursue his true passion: drawing webtoons. While working as an elite NIS agent, he continued sketching during his spare time and realized that occasional drawings wouldn't fulfill his dream. He staged his death by jumping from a helicopter on a stormy night, then disguised himself to disappear and start fresh as a webtoon artist.

Foreshadowing: The timeline shows Jun balancing duty with art throughout his training, hinting at his eventual choice to leave.

  • fake death
  • NIS
  • Jun
  • webtoon
  • resignation
Q2

How did Jun's webtoon reveal his secret identity?

Jun's webtoon became hugely successful because he was drawing from his actual experiences as a secret agent. The episodes depicted real missions and operations he carried out for the NIS. When the NIS recognized one episode matching a top-secret operation, they realized Jun was still alive and that his stories were based on true events.

Foreshadowing: The timeline notes Jun continued drawing webtoons during his time as an agent, planting the seeds for this revelation.

  • webtoon
  • secret identity
  • NIS
  • operation
  • discovery
Q3

Why is Jason after Jun in the movie?

Jason is Jun's nemesis seeking vengeance for his brother's death. Jason holds Jun and Cheol responsible for killing his brother while they were working as NIS agents. The webtoon's success draws Jason out of hiding, and he orchestrates a hostage situation to force Jun to face him.

Foreshadowing: Jason's presence as Jun's longtime nemesis in the series mirrors his role in the real story.

  • Jason
  • revenge
  • brother
  • nemesis
  • hostage
Q4

Why did Cheol help Jun escape and join forces with him?

Cheol was Jun's former NIS colleague who chose loyalty to his old partner over the agency's orders. When the NIS captured Jun's daughter, Cheol broke free and escaped with her, then headed to help Jun. Together with Chief Cheon, they formed a team to take down Jason, whom they both had history with.

Foreshadowing: The timeline establishes Cheol as a former colleague who ultimately joins forces with Jun.

  • Cheol
  • NIS
  • colleague
  • alliance
  • daughter
Q5

What happened to Jason's brother and why does he want revenge?

Jason's brother was killed during an NIS operation, and Jun (along with Cheol) was responsible for his death. This tragedy drove Jason to become vengeful and target Jun specifically. Jason's entire motivation throughout the film centers on making Jun pay for taking his brother's life.

Foreshadowing: The final confrontation reveals Jason aims to avenge his brother's death at Jun and Cheon's hands.

  • Jason's brother
  • death
  • revenge
  • killer
  • NIS operation
Q6

How did the NIS discover Jun was still alive?

The NIS discovered Jun was alive when they recognized that his latest webtoon episode depicted a real, top-secret operation they had carried out. The details were too accurate to be coincidence, confirming that Jun was the artist and that he had faked his death years earlier.

Foreshadowing: Jun's webtoon success brings his family out of obscurity while simultaneously stirring trouble.

  • NIS
  • discovery
  • alive
  • webtoon
  • top-secret operation
Q7

Why was Jun's daughter captured by the NIS?

Jun's daughter was captured during the chaos after Jason's hostage demand. The NIS agents were trying to locate and interrogate Jun about his webtoon and past. When the situation escalated, they seized his daughter as leverage, forcing Jun to take action to rescue her.

Foreshadowing: The hostage demand from Jason triggers a chain of events leading to the daughter's capture.

  • daughter
  • capture
  • NIS
  • hostage
  • leverage
Q8

Why did Jun choose to become a webtoon artist instead of staying an agent?

Jun chose webtoons because drawing was his true passion that persisted even during his NIS career. He realized that occasional drawings wouldn't satisfy his dream of becoming a full-time artist. The duality of his life, balancing covert missions with his artistic side, eventually led him to abandon his dangerous career for creative work.

Foreshadowing: Timeline events show Jun continuously drawing throughout his training and missions.

  • webtoon artist
  • passion
  • dream
  • drawing
  • career change
Q9

How did Jun defeat Jason in the final confrontation?

Jun, Cheol, and Chief Cheon teamed up to locate Jason's hideout and confront him and his henchmen. After an intense battle, they overpowered Jason's forces and defeated him. With Jason eliminated, the threat to Jun's family ended and his name was cleared of any wrongdoing.

Foreshadowing: The trio's formation and planning set up the decisive move against Jason.

  • Jason
  • defeat
  • final battle
  • confrontation
  • victory
Q10

What was Chief Cheon's role in Jun's past and present?

Chief Cheon was the key figure who discovered Jun's potential and recruited him into the NIS, pushing him toward elite status. In the present, Cheon joins forces with Jun and Cheol to fight Jason. His involvement helps clear Jun's name and provides crucial support during the final confrontation.

Foreshadowing: Jun's past shows Cheon as the mentor who spotted his fighting and drawing skills.

  • Chief Cheon
  • mentor
  • NIS
  • recruit
  • alliance

Movie threads

More Movies Like Hitman: Agent Jun, by Mood & Story

Curated lists built around what makes Hitman: Agent Jun tick: the same mood, the same kind of story or the same emotional payoff. Each list explains why these movies belong together.

Action-Comedies with a Secret Past like Hitman: Agent Jun

Hilarious mayhem erupts when a hidden, expert past life is forced back into the open. If you enjoyed the blend of espionage and humor in Hitman: Agent Jun, you'll love these movies. This collection features action-comedies where characters with a hidden, expert past must use their forgotten skills, leading to hilarious and high-stakes scenarios similar to the journey of a webtoon artist rediscovering his life as a superspy.

  • action-packed
  • comedic
  • thrilling
  • nostalgic
  • fish-out-of-water
  • competent protagonist
  • Tone: light, comedic
  • Pacing: fast, energetic
Why these movies?

The story pattern: The narrative typically follows a protagonist who has left a dangerous or highly skilled life behind for a peaceful existence. When their past catches up, they are forced to use their dormant abilities to protect their new life, often with a mix of reluctance and rediscovered prowess. The story balances comedic friction between their two identities with escalating action set pieces.

Why they belong together: Movies in this thread share a specific tone: they are lighthearted and funny despite high-intensity action. The central theme of a 'secret past' creates a unique character arc of rediscovery and provides a rich source for both comedy and thrilling confrontations, making the viewing experience consistently energetic and optimistic.

Movies where a Dangerous Job Threatens Family like Hitman: Agent Jun

High-octane professions collide with the quiet needs of family, forcing a balance between duty and love. Fans of Hitman: Agent Jun will appreciate these stories where a protagonist's high-stakes life puts their family in peril. Explore action-packed films and thrillers that focus on the emotional stakes of protecting loved ones, similar to the webtoon artist who must shield his daughter from the dangers of his former spy life.

  • tense
  • family-oriented
  • protective
  • thrilling
  • high stakes
  • father-daughter
  • Tone: tense, family-oriented
  • Pacing: fast, driven by threat
Why these movies?

The story pattern: The plot revolves around a threat from the protagonist's professional life spilling over into their personal world, endangering their family. The journey involves using their specialized skills not for a mission, but for personal protection, forcing a reconciliation between their two identities. The narrative emphasizes the stakes of family safety above all else.

Why they belong together: These movies are grouped by their central conflict: the direct endangerment of a protagonist's family due to their skills or past. This creates a potent mix of high-intensity action sequences driven by deeply personal motivation, resulting in stories that are both thrilling and emotionally resonant with themes of protection and responsibility.

Every angle

Hitman: Agent Jun (2020) Explained: Plot, Timeline & Characters

Everything about Hitman: Agent Jun in one place: what happens in the plot summary, the timeline in chronological order, the characters and meaning and a spoiler-free summary. What's After the Movie adds the cast, box office and post-credit scenes.

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