Sister poster
FilmCrimeThriller

Sister (2026)

Original title: 시스터

2026-01-28 · 1h 27m · KO
58%
User score
8 votes
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Desperate to raise money for her younger sister's surgery, Hae-ran teams up with Tae-soo to kidnap her half-sister So-jin. So-jin wakes up confined in an unfamiliar place. Hae-ran and Tae-soo demand a hefty ransom, expecting her wealthy father to cough up the money. Upon discovering that one of her captors is her half-sister, So-jin enters a precarious alliance that blurs the lines between victim and perpetrator as she plots a counterattack against the ruthless Tae-soo.

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Jin Sung-moonDirector

Top billed cast

Full cast & crew →
Jung Zi-soJung Zi-soSeong Hae-ranLee Soo-hyukLee Soo-hyukJung Tae-sooCha Joo-youngCha Joo-youngPark So-jinJung Ji-wooJung Ji-wooRadio DJ

Movie DNA

Genre affinityCrime · ThrillerPacingShortDirector preference1397365Actor preference16519 · 681998 · 1899132Country preferenceKrDecade preference2020

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Frequently asked questions about Sister

What is Sister about?

Desperate to raise money for her younger sister's surgery, Hae-ran teams up with Tae-soo to kidnap her half-sister So-jin. So-jin wakes up confined in an unfamiliar place. Hae-ran and Tae-soo demand a hefty ransom, expecting her wealthy father to cough up the money. Upon discovering that one of her captors is her half-sister, So-jin enters a precarious alliance that blurs the lines between victim and perpetrator as she plots a counterattack against the ruthless Tae-soo.

How long is Sister?

Sister has a runtime of 87 minutes.