Top 21 Fascinating Sci-Fi Korean Dramas Of All Time

Experience the world of science fiction and fantasy with these exciting dramas packed with romance, action, and suspense.

Korean dramas have had a big impact all over the world. They have helped spread Korean culture around the world, including its language, food, and fashion. They have also helped South Korea become more popular as a travel destination.

The stories are often intense, fast-paced, and keep you guessing, which makes it hard for people to stop watching once they start. You can watch dramas for free or for a fee on platforms that let you stream them.

Sci-Fi Korean Dramas

There are many different kinds of Korean dramas, such as comedies, romances, thrillers, suspense, stories about friends, sports, and more. Sci-fi, which is short for “science fiction,” is one of them.

sci fi korean dramas

Sci-Fi is a type of speculative fiction that usually deals with imaginative and futuristic ideas like advanced technology, time travel, parallel universes, and life on other planets.

Here is a list of some of the best science fiction dramas you can watch. These dramas have everything a good science fiction show should have and are easy to find.

1. Sweet Home

Hangul: 스위트홈

Year: 2020

Cha Hyun Soo decides to leave his house. Strange things start to happen in his flat and all over Korea, which soon disrupts his quiet life. Hyun Soo and the other people who live there try to stay alive as people start to change into monsters.

sweet home kdrama 11

Rating:

4 star rating

Main Cast (Characters):

  • Song Kang as Cha Hyun Soo
  • Lee Jin Wook as Pyeon Sang Wook
  • Lee Shi Young as Seo Yi Kyung
  • Lee Do Hyun as Lee Eun Hyuk

No. Of Episodes: 10 (52 min. each)

Streaming Options (region-specific):

Netflix button
Free streaming sites button

Short Review: This thriller drama is full of action, tension, and monsters, so you will love it. The actors, storyline, special effects, and production are all well prepared. But if you read the webcomic, you’ll be let down as it is somewhat different.

2. W: Two Worlds

Yeon Joo, who starts to read a webtoon ‘W’ written by her father is pulled into the webtoon world of W. While she is in the webtoon, she saves Kang Cheol, and becomes entangled in a murder mystery.

w two worlds kdrama 11

Cast –

  • Han Hyo Joo as Oh Yeon Joo
  • Lee Jong Suk as Kang Cheol
  • Kim Eui Sung as Oh Sung Moo
  • Lee Tae Hwan as Seo Do Yoon

No. Of Episodes – 16

Watch On – Netflix, Viki

3. Doom At Your Service

Dong Kyung lost her parents at an early age. Later, she is diagnosed with brain cancer, forcing her to have less than 100 days to live. As she prays for the destruction of the world, the doom himself comes to her and live with her for the last 100 days.

doom at your service kdrama 11

Cast –

  • Park Bo Young as Tak Dong Kyung
  • Seo In Guk as Kim Sa Ram
  • Lee Soo Hyuk as Cha Joo Ik
  • Kang Tae Oh as Lee Hyun Gyu

No. Of Episodes – 16

Watch On – Viki, Prime Video

4. Signal

Park Hae Young witnesses the kidnapping of a girl 15 years ago. Currently, Hae Yeong is now a police officer and criminal profiler. One day, he finds a walkie-talkie that connects him with Detective Lee Jae Han who is in the past. Together, they solve a series of murders.

Read Signal Review

signal kdrama 11

Cast –

  • Lee Je Hoon as Park Hae Yeong
  • Kim Hye Soo as Cha Soo Hyun
  • Jo Jin Woong as Lee Jae Han
  • Kim Won Hae as Kim Gye Cheol

No. Of Episodes – 16

Watch On – Netflix, Viki

5. The King: Eternal Monarch

Set in two parallel worlds, the drama follows Emperor Lee Gon of the Kingdom of Corea, who discovers access to an alternate reality after crossing a mythical door where the Republic of Korea exists in the Kingdom’s stead.

the king eternal monarch kdrama 11

Cast –

  • Lee Min Ho as Lee Gon
  • Kim Go Eun as Jung Tae Eul
  • Woo Do Hwan as Jo Young
  • Lee Jung Jin as Yi Rim

No. Of Episodes – 16

Watch On – Netflix

6. My Love From The Star

Do Min Joon is an alien who landed on Earth 400 years ago. He has different abilities & a cute appearance. When he discovers that he has three months left on earth, he meets Cheon Song Yi, the biggest Hallyu star in South Korea.

my love from the star kdrama 11

Cast –

  • Kim Soo Hyun as Do Min Joon
  • Jun Ji Hyun as Cheon Song Yi
  • Park Hae Jin as Lee Hee Kyung
  • Yoo In Na as Yoo Se Mi

No. Of Episodes – 21

Watch On – Netflix, Viki, Kocowa

7. Memories Of The Alhambra

After receiving an email about a game, Jin Woo, CEO of a company travels to Spain to meet the creator of the game. However, he has gone missing, and there, he meets his sister, who is the owner of the hostel he stays in. Both get involved in mysterious incidents.

memories of the alhambra kdrama 11

Cast –

  • Hyun Bin as Yoo Jin Woo
  • Park Shin Hye as Jung Hee Joo
  • Park Hoon as Cha Hyun Suk
  • Lee Seung Jun as Park Sun Ho

No. Of Episodes – 16

Watch On – Netflix

8. Sisyphus: The Myth

The drama is about a genius engineer named Han Tae Sul who is trying to find out what happened to his older brother and a mysterious woman named Gang Seo Hae who goes back in time to help him save the world from an impending threat.

Sisyphus the myth kdrama 11

Cast –

  • Cho Seung Woo as Han Tae Sul
  • Park Shin Hye as Kang Seo Hae
  • Kim Byung Chul as Seo Won Ju
  • Sung Dong Il as President Park

No. Of Episodes – 16

Watch On – Netflix

9. The Silent Sea

Hangul: 고요의 바다

Year: 2021

Set in the future, when the earth has become a desert and people don’t have enough water or food. The story is about members of a special team who are sent to the moon to get a strange sample from an abandoned research centre.

the silent sea kdrama 11

Rating:

3 star rating

Main Cast (Characters):

  • Gong Yoo as Han Yoon Jae
  • Bae Doo Na as Song Ji An
  • Lee Joon as Ryu Tae Seok
  • Heo Sung Tae as Kim Jae Sun

No. Of Episodes: 8 (50 min. each)

Streaming Options (region-specific):

Netflix button
Free streaming sites button

Short Review: The story is interesting and keeps you guessing, and the visuals are beautiful. There are times when the plot moves slowly, and people have different opinions about this drama. Overall, it is a good sci-fi show that is entertaining to watch.

10. I’m Not A Robot

Ji Ah receives a phone call from her ex-boyfriend who built a robot with the same physical appearance as hers, but an accident has broken it. He offers her money if she will go to a shareholder’s house and pretend to be a robot.

i am not a robot kdrama 11

Cast –

  • Yoo Seung Ho as Kim Min Kyu
  • Chae Soo Bin as Jo Ji Ah
  • Uhm Ki Joon as Hong Baek Gyun
  • Park Se Wan as Pi

No. Of Episodes – 32

Watch On – Netflix, Viki, MX Player

11. Glitch

One night, After a mysterious flash of light, was cast over him, Ji Hyo’s boyfriend suddenly disappears. As she searches for him, she tries to uncover the truth behind a mysterious secret with the help of a community of UFO watchers, including Bo Ra.

glitch kdrama 11

Cast –

  • Jeon Yeo Been as Hong Ji Hyo
  • Nana as Heo Bo Ra
  • Lee Dong Hwi as Ma Hyung Woo
  • Ryu Kyung Soo as Kim Byung Jo

No. Of Episodes – 10

Watch On – Netflix

12. Grid

In 1997, a mysterious ghost saved humankind and then disappeared. It reappeared after 24 yrs. The General Affairs Bureau and various detectives digs into the truth about the mysterious existence that saved mankind in crisis.

grid kdrama 11

Cast –

  • Seo Kang Joon as Kim Sae Ha
  • Kim Ah Joong as Jung Sae Byeok
  • Kim Mu Yeol as Song Eo Jin
  • Lee Si Young as Ghost

No. Of Episodes – 10

Watch On – Disney+

13. Rugal

A police officer whose attempt to bring down a criminal organization, results in killing his wife and cutting out both of his eyes. The NIS approaches him with an offer to become a member of Rugal. He receives two artificial eyes with biotechnology built into them.

rugal kdrama 11

Cast –

  • Choi Jin Hyuk as Kang Ki Beom
  • Park Sung Woong as Hwang Deuk Goo
  • Jo Dong Hyuk as Han Tae Woong
  • Jung Hye In as Song Mi Na

No. Of Episodes – 16

Watch On – Netflix

14. Kairos

The drama centers around two persons. A man whose daughter is kidnapped and a woman whose mother is missing. They both contact each other through a phone call and help each other but they are a month apart in time and can only speak for 1 minute.

kairos kdrama 11

Cast –

  • Shin Sung Rok as Kim Seo Jin
  • Lee Se Young as Han Ae Ri
  • Ahn Bo Hyun as Seo Do Gyun
  • Nam Gyu Ri as Kang Hyun Chae

No. Of Episodes – 16

Watch On – Viki

15. My Roommate is a Gumiho

To become a human, a 999-year-old Gumiho, Woo Yeo needs to fill his fox bead with human energy before he turns 1,000 years old. One day, a college girl, Lee Dam accidentally swallows his fox bead. He suggests that they should live together until they figure out a solution.

my roommate is a gumiho kdrama 11

Cast –

  • Jang Ki Yong as Shin Woo Yeo
  • Lee Hye Ri as Lee Dam
  • Kang Han Na as Yang Hye Sun
  • Kim Do Wan as Do Jae Jin

No. Of Episodes – 16

Watch On – Viki

16. Train

Seo Do Won is a detective who tries to save Seo Kyung. There are two different worlds in this drama. Do Won travels to the other world through a mysterious train that shows up in the abandoned station to track the serial killer with the help of the other Seo Kyung.

train kdrama 11

Cast –

  • Yoon Shi Yoon as Seo Do Won
  • Kyung Soo Jin as Han Seo Kyung
  • Shin So Yool as Lee Jung Min
  • Lee Hang Na as Oh Mi Sook

No. Of Episodes – 12

Watch On – Viki

17. Island

Hangul: 아일랜드

Year: 2022

The story of a chaebol heiress who is banished to Jeju Island after she is possessed by a spirit. She meets an immortal human and a priest who performs exorcisms. Together, they must fight against the evil that is trying to destroy the world.

island kdrama 12

Rating:

3 star rating

Main Cast (Characters):

  • Kim Nam Gil as Van
  • Lee Da Hee as Won Mi Ho
  • Cha Eun Woo as Kang Chan Hyuk
  • Sung Joon as Goong Tan

No. Of Episodes: 12 (50 min. each)

Streaming Options (region-specific):

Prime video button
Free streaming sites button

18. Are You Human?

The story of a highly advanced android named Nam Shin III, who is created to look exactly like the real Nam Shin. When the real Nam Shin falls into a coma, his mother hires a bodyguard named Kang So Bong to protect the android and keep his true identity a secret.

are you human too kdrama 11

Cast –

  • Seo Kang Joon as Nam Shin
  • Gong Seung Yeon as Kang So Bong
  • Lee Joon Hyuk as Ji Young Hoon
  • Park Hwan Hee as Seo Ye Na

No. Of Episodes – 36

Watch On – Netflix, Viki

19. While You Were Sleeping

Jae Chan, a prosecutor, decides to interfere in the course of events and ends up saving the lives of Hong Joo and Woo Tak. When the three of them start having dreams about one another, they realize that their lives are now somehow connected.

while you were sleeping kdrama 11

Cast –

  • Bae Suzy as Nam Hong Ju
  • Lee Jong Suk as Jung Jae Chan
  • Jung Hae In as Han Woo Tak
  • Lee Sang Yeob as Lee Yu Beom

No. Of Episodes – 32

Watch On – Viki, Kocowa

20. He is Psychometric

Lee An has a special psychometry ability. Whenever he touches someone, he can read that person’s memory. Using his ability, he wants to take out evil people in the world. Jae In is a girl with a scar in her mind. They happen to meet and struggle to solve cases.

he is psychometric kdrama 11

Cast –

  • Park Jin Young as Lee Ahn
  • Shin Ye Eun as Yoon Jae In
  • Kim Kwon as Kang Sung Mo
  • Kim Da Som as Eun Ji Soo

No. Of Episodes – 16

Watch On – Netflix, Viki

21. 365: Repeat The Year

Hangul: 365: 운명을 거스르는 1년

Year: 2020

The story of a group of people who are given the opportunity to relive a year of their lives in order to prevent a tragic accident from happening. Along the way, they uncover hidden truths about themselves and those around them, and must confront their past mistakes.

365 repeat the year kdrama 11

Rating:

4 star rating

Main Cast (Characters):

  • Lee Joon Hyuk as Ji Hyung Joo
  • Nam Ji Hyun as Shin Ga Hyun
  • Kim Jee Soo as Lee Shin
  • Lee Sung Wook as Park Sun Ho

No. Of Episodes: 24 (35 min. each)

Streaming Options (region-specific):

Viki button
Viu button
Prime video button
Kocowa button
Free streaming sites button

Short Review: The drama explores themes of destiny, atonement, and the value of second chances. The acting is excellent, and the story is well-written. The drama also got praise for its original premise and for how it keeps the audience guessing right up to the very end.

Wrapping Up

So, these were the recommended sci-fi Kdramas you need to watch of you’re interested in fantasy and science. These are suspenseful, romantic, and packed with action scenes that will make you binge-watch them.

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Hi! I'm Min Chae from South Korea. I love to watch Korean dramas in my free time and can talk about them for hours. My favorite actor is Gong Yoo :)

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