Luck-Key (2016) Timeline Explained – Every Event in Order

Jae-sung, who is at rock bottom and contemplating suicide after being insulted by his landlady, sees an opportunity when he notices the stranger's luxurious belongings. Desperate for a different life, he impulsively swaps lockers, steals the man's car and money, and disappears, viewing it as a chance at a second chance.

Foreshadowing: Earlier, Jae-sung's despair and thoughts of ending his life establish his desperation, making the theft feel like his only option.

• jae-sung
• lockers swap
• sauna
• identity theft
• desperation

After Lina pays his hospital bill, Hyung-wook uses his natural knife skills, originally developed from his past life, to land a job as a restaurant chef. His precise technique draws customers. When he discovers a calendar hinting at an acting career, he auditioned for a gangster-themed TV show where his real-life action abilities made him stand out, leading to his rise as a television star.

Foreshadowing: The calendar clue mentioning a gangster-themed TV show foreshadows his eventual career path.

• hyung-wook
• chef
• actor
• knife skills
• TV show
• memory loss

Hyung-wook is not a traditional assassin. Instead, he helps people who are targets of assassinations by faking their deaths and letting them start new lives under different identities. He shares the profits from their former assets with them, this is revealed when Jae-sung answers a phone call and meets the businessmen inquiring about Eun-joo.

Foreshadowing: The secret room in his apartment and his protection of Eun-joo hint at his unusual occupation.

• hyung-wook
• assassin
• fake deaths
• eun-joo
• profession

Eun-joo is a witness who was supposed to be eliminated, but Hyung-wook protected her by faking her death and hiding her in his building. The businessmen who hired Hyung-wook pursue her because she knows something incriminating about them. Jae-sung discovers her living there and eventually falls for her.

Foreshadowing: Jae-sung's discovery of the secret room and his suspicion that Hyung-wook is protecting someone hints at Eun-joo's existence.

• eun-joo
• witness
• protection
• businessmen
• hiding

Hyung-wook pushes Lina away because he wants to protect her from the danger associated with his criminal past. He decides to go through with the plan to fake his own death so he can escape the businessmen permanently, believing that ending their relationship is the safest option for her.

Foreshadowing: The growing romance between Hyung-wook and Lina throughout the story makes his sudden rejection feel contradictory until his true intentions are revealed.

• hyung-wook
• lina
• breakup
• protection
• fake death plan

The plan involves Hyung-wook, Jae-sung, and Eun-joo faking their deaths to escape from the businessmen who want them dead. Lina follows Hyung-wook to the location and her unexpected interference nearly ruins the plan. The businessmen eventually believe they are dead and leave, allowing the trio to disappear and start fresh under new identities.

Foreshadowing: Earlier hints about faking deaths and starting new lives establish this as Hyung-wook's usual method of operation.

• fake death
• businessmen
• escape
• plan
• lina

After discovering Eun-joo living in Hyung-wook's building, Jae-sung begins quietly watching her out of suspicion. Over time, despite the danger, he finds himself genuinely drawn to her and develops real feelings, which becomes part of his own redemption arc alongside Hyung-wook.

Foreshadowing: His initial surveillance of her is framed as investigation, but the gradual shift toward genuine attraction is woven into their scenes together.

• jae-sung
• eun-joo
• attraction
• watching
• feelings

By the end, both characters have transformed their lives, Hyung-wook has already become a successful action star on the gangster TV show, while Jae-sung, who originally wanted to be an actor, gets to join him in a new series. The ending shows them together as co-stars, completing Jae-sung's arc from struggling actor to television star.

Foreshadowing: The calendar clue about the gangster-themed TV show and Jae-sung's background as an aspiring actor foreshadow this resolution.

• jae-sung
• hyung-wook
• tv show
• ending
• co-stars

As a paramedic, Lina encounters Hyung-wook in the hospital and pays his bill when he cannot afford it, but with the condition that he repay her later. This financial obligation binds them together and becomes the foundation for their developing relationship as she helps him rebuild his life.

Foreshadowing: This act of kindness establishes Lina as a compassionate character who will play a major role in Hyung-wook's transformation.

• lina
• hospital bill
• paramedic
• repayment
• kindness

The head injury Hyung-wook sustained when he slipped on soap in the sauna causes amnesia. When Jae-sung later tries to return his belongings in the hospital, Hyung-wook grabs him but cannot form clear memories of the encounter or recognize Jae-sung as the person who stole his identity.

Foreshadowing: The chaotic moment of the slip in the sauna establishes the injury that drives the entire plot.

• hyung-wook
• amnesia
• memory loss
• hospital
• accident

Hyung-wook's precise, practiced knife work from his previous profession translates directly to culinary skills. His ability to handle a knife with speed and accuracy makes him an exceptional chef, drawing curious customers to the restaurant where he works.

Foreshadowing: His background as an assassin who uses knives professionally is the source of his culinary talent.

• knife skills
• cooking
• chef
• precision
• transfer