A Hard Day (2015) Timeline Explained – Every Event in Order

Ko panics after accidentally killing the homeless man while driving drunk. He's already under investigation by internal affairs for bribery and fears manslaughter charges would destroy him. When he sees a patrol car approaching, he makes a desperate decision to hide the body, first in his trunk, then inside his mother's coffin at the funeral home, believing this is the only way to avoid exposure.

Foreshadowing: Earlier scenes establish Ko as a corrupt detective willing to bend rules, making his moral descent believable.

• ko
• body
• coffin
• mother
• cover-up
• accident

The homeless man Ko kills is Lee, a wanted murderer that his own police squad is hunting. Lee had stolen a key to Lieutenant Park's secret vault containing confiscated cocaine before being killed, making him a crucial figure in the larger criminal conspiracy.

Foreshadowing: The squad's investigation into murderer Lee runs parallel to Ko's personal crisis, creating dramatic irony.

• lee
• homeless man
• murderer
• wanted

Park witnessed the accident but chose blackmail over arrest because he has his own criminal secrets to protect. Since Ko is a corrupt cop under investigation, Park sees an opportunity to gain leverage over him. Additionally, Park's own involvement in the cocaine theft scheme means he cannot afford police attention on the incident.

Foreshadowing: Park's quick arrival at the accident scene and his calm demeanor hint at his ulterior motives.

• park
• blackmail
• lieutenant
• corruption
• cover-up

Park kills Ko's subordinate to silence him. The subordinate had been investigating damage to Ko's vehicle and was getting too close to discovering the truth about the hit-and-run. Park uses a crane to drop a shipping container on the subordinate's car, ensuring he never reveals what he knows.

Foreshadowing: Earlier tension builds as Ko's subordinate persistently questions the vehicle damage, drawing unwanted attention.

• park
• subordinate
• murder
• crane
• silence

Park's vault contains approximately 5 billion won in cash from his criminal activities, specifically, cocaine that was supposed to be confiscated evidence but was actually stolen by Park himself. Lee stole the vault key during his escape from Park's pursuit, which is why Park shot him.

Foreshadowing: The revelation explains why Park would kill someone and why he becomes so desperate to retrieve the key.

• vault
• cash
• cocaine
• park
• key
• theft

Ko creates this desperate weapon to eliminate Park, who is blackmailing him and threatening his family. Knowing Park will want the key Lee supposedly had, Ko rigs the corpse with explosives and uses it as bait. When Park opens the body bag, Ko detonates the device, sending Park's car off a bridge.

Foreshadowing: Ko's earlier decision to exhume the coffin and examine Lee's body sets up this lethal improvisation.

• explosive
• body
• ko
• park
• trap
• weapon

Park survives because he is thrown from the vehicle during the crash. When his car careens off the bridge and into the lake, Park is ejected before the car submerges. This allows him to later ambush Ko at his home, leading to their final confrontation.

Foreshadowing: The explosion's intensity makes Park's survival seem unlikely, adding to the twist.

• park
• explosion
• survive
• bridge
• lake

During the final struggle in Ko's home, Park tries to retrieve his gun from a fallen shelf. In the chaotic fight, as both men struggle for the weapon, Park inadvertently pulls the trigger while the gun is pointing at himself, killing him.

Foreshadowing: The shelf's precarious position was established earlier during their struggle.

• park
• shoot
• accident
• struggle
• gun

Senior police officials decide to cover up both Park's and Ko's crimes to protect the department's reputation. With Park dead and no witnesses willing to come forward, Ko effectively escapes official justice. He then uses Lee's key to access Park's vault and takes the cash for himself.

Foreshadowing: The institutional corruption has been established throughout the film, making this ending consistent.

• ko
• arrest
• cover-up
• officials
• reputation
• vault

Park killed Lee because Lee stole the key to Park's secret vault containing cocaine and cash. During Lee's escape from Park's pursuit, Lee grabbed the vault key. Park shot Lee to retrieve the key and silence him, then attempted to cover up the murder by making it look like a hit-and-run accident.

Foreshadowing: This explains Park's unusual interest in a simple homeless murder case.

• lee
• park
• shot
• key
• vault
• cocaine

Ko returns to the grave because he needs the key that Lee had stolen from Park. After learning that Lee was carrying a vault key, Ko hopes to find it in the coffin. This desperate search is interrupted when his subordinate catches him digging at the grave.

Foreshadowing: The earlier discovery of Lee's bullet wounds prompts Ko to investigate further.

• ko
• grave
• key
• search
• vault