Sweet Home (2020) Review: Monsters Made of Desire

Is Sweet Home worth watching?

Yes, with a clear caveat: Sweet Home’s first season is a gruesome, inventive monster thriller, but the two seasons that follow trade its claustrophobic power for a sprawling and far less focused story. The central idea, that people turn into monsters shaped by their deepest desires, gives the horror a psychological bite. Viewers who stop after season 1 will get the best of it; those who continue should expect diminishing returns.

What is Sweet Home about?

Cha Hyun-su (Song Kang) is a withdrawn teenager who has lost his family and moves alone into Green Home, a run-down Seoul apartment block, intending to disappear. Within days, the building is cut off from the outside world. Across the country, people are transforming into grotesque creatures, and each monster seems to take its shape from whatever its host wanted most.

The surviving residents barricade themselves inside, a mismatched group including a scarred, intimidating loner (Lee Jin-wook), a former firefighter (Lee Si-young), a sharp-minded young man and his sister (Lee Do-hyun and Go Min-si) and a guitarist (Park Gyu-young). While they argue over food, weapons and who can be trusted, Hyun-su starts to show signs of turning himself, though his transformation does not seem to follow the usual pattern.

Sweet Home is a South Korean series in Korean, adapted from the webtoon by Kim Carnby and Hwang Young-chan and directed by Lee Eung-bok for Netflix. This review covers the complete show: three seasons and 26 episodes released between 2020 and 2024. The story has ended.

A siege with ideas

The first season’s great strength is its setting. Green Home is a cramped, decaying building of narrow corridors, stairwells and flickering lights, and the series makes brilliant use of its geography: every trip to another floor for supplies becomes a small mission, and every locked door might hide a victim or a threat. The confinement forces the residents into close quarters and exposes their fear, selfishness and occasional heroism.

The desire-driven monsters are the show’s best idea. Because each creature grows out of a specific human craving, the horror doubles as a grim fable about appetite and loneliness, and the designs are memorably grotesque. Not all of the digital effects hold up, particularly in brighter scenes, but the creatures are distinctive enough that the imperfections rarely break the spell.

Song Kang and the found family

Song Kang is well cast as Hyun-su, a boy who has already given up on life before the apocalypse starts and who finds a reason to fight among strangers. His quiet, haunted performance anchors the show’s emotional arc. Lee Jin-wook is excellent as the menacing loner whose gruffness hides something more complicated, and Lee Si-young brings real physical conviction to the action scenes. The ensemble dynamic, in which trust has to be earned under pressure, gives the first season a heart to match its gore.

Where the later seasons lose their way

Seasons 2 and 3 move beyond the apartment block into a wider world of military bases, research programmes and competing factions. The shift is ambitious but costly. Many new characters arrive, beloved ones get less screen time, and the storytelling becomes fragmented and heavy on exposition. The claustrophobia that made season 1 so frightening is gone, and the monsters feel less like metaphors than obstacles. The conclusion is serviceable, but it is hard to feel the same investment.

Who should watch Sweet Home?

It is best suited to adult fans of horror and creature features who can handle a lot of gore. Season 1’s ten episodes make a strong, largely self-contained binge; the full series is a bigger commitment with weaker returns. Expect graphic violence, body horror, suicide themes and disturbing imagery throughout.

If you want more Korean horror:

• Kingdom for a tighter, more consistently brilliant take on a plague of monsters, set in Joseon-era Korea.
• Happiness, another thriller about residents trapped in an apartment block during an outbreak, with sharper social satire.

The verdict

Sweet Home begins as one of the best Korean horror series of its time, a frightening, imaginative siege that turns human desire into monsters. The later seasons squander much of that promise, but the first season alone justifies a recommendation for genre fans with strong stomachs.

Rating: 3.5/5