Parasite ending explained: the party, the bunker and Ki-woo's plan
Spoilers ahead: this article discusses the ending.
Parasite ending explained starts with a garden party that turns into a massacre and ends with a son writing a letter he cannot afford to keep. Bong Joon Ho's 2019 film, which won the Palme d'Or and the Academy Award for Best Picture, closes on an image of hope that the director has said is meant to be crushed.
By the final act the Kim family have conned their way into every job in the wealthy Park household, only to discover that the old housekeeper's husband, Geun-sae, has been living in a hidden bunker beneath the house for years.
Here is what happens in the last half hour, why Ki-taek does what he does, and how Bong himself reads the closing shot.
Parasite ending explained: what happens at the birthday party
Ki-woo goes down into the bunker carrying the scholar's rock, but Geun-sae overpowers him and knocks him out. Geun-sae then walks into the garden party for Da-song's birthday and stabs Ki-jung in front of the guests. Da-song, who once saw Geun-sae as a ghost, has a seizure. Chung-sook kills Geun-sae with a barbecue skewer.
In the chaos, Mr Park orders Ki-taek to drive his son to hospital and, reaching past Ki-taek for the car keys, recoils at the smell of Geun-sae's body. Ki-taek, who has heard the Parks talk about his smell all film, picks up the knife and kills Mr Park, then disappears.
Why Ki-taek snaps
The film builds the moment through small humiliations. The Parks repeatedly mention a smell that marks the Kims as poor, and Bong uses smell as a line between classes that cannot be washed away. When Mr Park pinches his nose over a dying man, Ki-taek sees the same contempt aimed at someone exactly like him.
Critics have also pointed out that the Kims' disaster grows partly from their failure to show solidarity with the other poor family. Instead of joining forces with Moon-gwang and Geun-sae, they fight them for the same scraps.
Ki-taek in the bunker and the Morse code
Weeks later, Ki-woo is recovering from brain surgery. He and his mother are convicted of fraud and given probation. Ki-jung is dead and Ki-taek is a fugitive. Ki-woo watches the old house and sees a light flickering in Morse code. His father has been hiding in the bunker the whole time, now under a new foreign family, and has buried Moon-gwang in the garden.
Ki-taek has taken Geun-sae's place exactly: a man living under a rich family's floor, tapping out messages nobody upstairs can read.
Ki-woo's letter and what Bong Joon Ho says it means
Ki-woo writes back. He promises to earn enough money to buy the house so his father can simply walk up the stairs. The film shows the dream play out, then cuts back to Ki-woo in the semi-basement flat.
Bong has described that final cut as a "surefire kill", a phrase meant to finish off any hope that Ki-woo will make it. Critics have read the plan as a bootstrapping fantasy that ignores the system dividing the families, and the director's own comment supports that reading.
Stairs, rocks and the title
Bong called Parasite a "stairway movie", and the house uses vertical space to show rank: the Parks live up the hill, the Kims below street level, and the bunker lower still. He chose the title for its double meaning. The Kims feed on the Parks, but the Parks also live off the labour of the poor.
The scholar's rock, a gift promising wealth, ends up as a weapon used against Ki-woo. At the end he returns it to a stream, a quiet sign that the idea of luck it carried has gone.
Questions people ask
Does Ki-woo buy the house at the end of Parasite?
No. The purchase is a fantasy. The film cuts back to Ki-woo in the basement flat, and Bong Joon Ho has said the ending implies he will never afford it.
Why does Ki-taek kill Mr Park?
Mr Park recoils from the smell of Geun-sae's body, the same class contempt he has shown toward Ki-taek's smell throughout the film.
Where is Ki-taek at the end?
Hiding in the secret bunker under the house, sending Morse code messages with the lights.