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 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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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