September 2025 is just around the corner, bringing an avalanche of new Korean dramas. There are thirteen exciting new series that will keep you on the edge of your seat. From the mind-bending psychological thriller of “Queen Mantis” to the intriguing romance and suspense of “Ms.Incognito.” Are you ready to find out your next favorite Korean drama this year? Get your exclusive sneak peek and discover all the must-watch K-dramas for September 2025 here!
13 Must-Watch New Korean Dramas in September 2025
1, “Queen Mantis” (사마귀 : 살인자의 외출) | September 5
- Genre: Thriller, Crime, Mystery, Psychological
- Main Cast: Go Hyun-jung, Jang Dong-yoon
- Episodes: 8
- Release Date: September 5, 2025
- Network: SBS
- Streaming Platform: Netflix
Synopsis:
The new Korean drama “Queen Mantis” is a Korean remake of the French crime series “La Mante.” A notorious female serial killer, nicknamed “Mantis,” is serving life in prison for brutally murdering five men over 20 years ago. Her son, who despises her, grows up to become a detective. A new copycat killer begins imitating her past murders’ methods. He forces her to team up from prison to solve the case and catch the new killer.
2. “My Youth” (마이 유스) | September 5
- Genre: Romance, Drama
- Main Cast: Song Joong-ki, Chun Woo-hee, Lee Joo-myung, Seo Ji-hoon
- Episodes: 12
- Release Date: September 5, 2025
- Network: JTBC
- Streaming Platform: Viki, Viu
Synopsis:
Two childhood best friends, a former child star, and a team leader of an entertainment agency, reunite as adults after 10 years. After a life-changing tragedy, their reunion forces them to confront old wounds as they face personal struggles and rediscover the love they once shared.
3. “Confidence Queen” (컨피던스 맨 KR) | September 6
- Genre: Crime, Comedy
- Main Cast: Park Min-young, Park Hee-soon, Jong-hyuk
- Episodes: 12
- Release Date: September 6, 2025
- Network: –
- Streaming Platform: Prime Video, Coupang TV, TV Chosun
Synopsis:
“Confidence Queen,” also known as “Confidence Man KR,” is a Korean remake of the 2018 Japanese drama “Confidence Man JP.” A genius woman with an IQ of 165 leads a team of three bold con artists. They devise elaborate scenarios to swindle the corrupt elite, greedy individuals in the real estate and financial sectors. Expect witty heists and twisty cons as the trio chases justice and profit.
4. “Tempest” (북극성 / “Polaris”) | September 10
- Genre: Action, Thriller, Political
- Main Cast: Jun Ji-hyun, Gang Dong-won
- Episodes: 9
- Release Date: September 10, 2025
- Network: –
- Streaming Platform: Disney+
Synopsis:
“Tempest,” also known as “Polaris,” is set against international intrigue. The story follows the widow of a South Korean politician who is a highly skilled diplomat and a mysterious special agent. They team up to uncover a deadly conspiracy following an assassination attempt on a presidential candidate, which is threatening the Korean Peninsula. Along the way, they rediscover their true identities, which they had lost. This high-stakes espionage thriller combines with romance as secrets unravel across global locales.
5. “You and Everything Else” (은중과 상연) | September 12
- Genre: Melodrama, Romance
- Main Cast: Kim Go-eun, Park Ji-hyun
- Episodes: 15
- Release Date: September 12, 2025
- Network: –
- Streaming Platform: Netflix
Synopsis:
Two lifelong best friends and rivals, Eun-joong and Sang-yeon, have a turbulent yet enduring friendship filled with warmth, rivalry, and repeated reunions. Sang-yeon is diagnosed with a terminal illness. She seeks out her old friend, Eun-joong, to accompany her to a euthanasia center. As they reconnect, they reflect on their past and the unbreakable bond between them. Heartfelt and introspective, the story explores love, jealousy, and reconciliation.
6. “A Hundred Memories” (백번의 추억) | September 13
- Genre: Romance, Youth, Period Drama
- Main Cast: Kim Da-mi, Shin Ye-eun, Heo Nam-jun
- Episodes: 12
- Release Date: September 13, 2025
- Network: JTBC
- Streaming Platform: Netflix
Synopsis:
Set in the late 1980s, the series follows two close friends and bus attendants, Young-rye and Jong-hee. They form a deep friendship and share first love as both fall for the same man, Jae-pil, a wealthy heir. The show is a nostalgic journey of first love, friendship, and growth in the vibrant youth of a bygone era.
7. “Shin’s Project” (신사장 프로젝트) | September 15
- Genre: Mystery, Comedy, Drama
- Main Cast: Han Suk-kyu, Bae Hyun-sung, Lee Re
- Episodes: 12
- Release Date: September 15, 2025
- Network: tvN
- Streaming Platform: TVING, Vidio
Synopsis:
Mr. Shin is a former top-class negotiator. Now, he runs a modest chicken restaurant. To deal with neighborhood disputes and fight injustice, he uses his unrivaled conflict-resolution skills. However, his life takes a turn when a rookie judge and a spunky delivery girl are assigned to work at his restaurant. Together they secretly help desperate people in “unwinnable” situations – often with comic and cathartic results.
8. “To the Moon” (달까지 가자) | September 19
- Genre: Workplace Drama, Satire
- Main Cast: Lee Sun-bin, Ra Mi-ran, Jo Aram, Kim Young-dae
- Episodes: 12
- Release Date: September 19, 2025
- Network: MBC
- Streaming Platform: TBA
Synopsis:
Korean drama “To the Moon” is a live adaptation of Jang Ryu-jin’s popular novel, which explores friendship, economic hardships, and growth amid instability. The story follows three underpaid working women who take a risky investment in cryptocurrency, hoping for a life-changing win. One of them unexpectedly meets a bored second-generation chaebol heir and helps him rediscover his lost passion. The story blends comedy and social commentary, exploring the daily challenges and dreams of its characters.
9. “Walking on Thin Ice” (은수좋은날) | September 20
- Genre: Crime Thriller, Family Melodrama
- Main Cast: Lee Young-ae, Kim Young-kwang, Park Yong-woo
- Episodes: 12
- Release Date: September 20, 2025
- Network: KBS2
- Streaming Platform: Wavve
Synopsis:
An ordinary housewife is drowning in debt for her terminally ill husband’s medical expenses. She accidentally finds a bag full of drugs worth hundreds of billions of won. By a twist of fate, she gets entangled in a crime with a mysterious schoolteacher and a secret drug dealer. The two find themselves on the run, pursued relentlessly by a detective. In this high-stakes chase, secrets unravel, and an “ordinary” woman is pushed to extraordinary lengths to survive.
10. “Intimate Ripley” (친밀한 리플리) | September 22
- Genre: Drama
- Main Cast: Lee Shi-a, Lee Il-hwa, Seol Jung-hwan, Han Ki-woong, Lee Seung-yeoh, Lee Hyo-na
- Episodes: 100
- Release Date: September 22, 2025
- Network: KBS2
- Streaming Platform: TBA
Synopsis:
“Intimate Ripley” depicts the story of a mother and daughter’s complex relationship. A woman enters a contract marriage with a chaebol heir. She finds out that her estranged birth mother is now her mother-in-law. In a high-stakes battle of deception, they fight to take over the golden palace. But that’s not all. She also has to fight a “villainous duo,” an elegant con-woman and her ruthless daughter, in a twisted war of lies and family secrets.
11. “First Lady” (퍼스트레이디) | September 24
- Genre: Political Melodrama, Revenge Thriller
- Main Cast: Eugene, Ji Hyun-woo, Lee Min-young
- Episodes: 12 episodes
- Release Date: September 24, 2025
- Network: MBN
- Streaming Platform: TBA
Synopsis:
Cha Su Yeon dreams of becoming First Lady. Her husband, Hyun Min Cheol, wins the presidency, and her dream comes true. But just 67 days before the inauguration, she faces a bitter reality. Her husband demands a divorce. This sparks political conspiracies and family secrets. Hyun Min Cheol, a self-made former laborer and orphan, rises to power. Sin Hae Rin serves as his closest confidant and secretary. Their relationships intensify amid ruthless power games and family conflicts.
12. “The Murky Stream” (탁류) | September 26
- Genre: Historical, Action, Drama
- Main Cast: Rowoon, Shin Ye-eun, Park Seo-ham, Park Ji-hwan
- Episodes: 9
- Release Date: September 26, 2025
- Network: –
- Streaming Platform: Disney+
Synopsis:
“The Murky Stream,” also known as “Takryu,” is set in the lawless Joseon era. A peasant-turned-vagabond, a bold merchant’s daughter, and an idealistic official fight to survive and change their destinies amidst widespread corruption. Their lives intertwine with a rough-hewn enforcer as they strive for a just society, leadership, and to uproot the “murky stream” of their world.
13. “Ms. Incognito” (착한 여자 부세미) | September 29
- Genre: Crime Romance, Contract-Marriage Drama
- Main Cast: Jeon Yeo-been, Jinyoung (Jung Jin-young), Seo Hyun-woo, Jang Yoon-ju
- Episodes: 12
- Release Date: September 29, 2025
- Network: NA (Genie TV co-production)
- Streaming Platform: Genie TV
Synopsis:
A broke bodyguard enters a contract marriage with a dying chaebol chairman. She takes on the false identity of Boo Se-mi to “reset” her life and secure the chairman’s huge inheritance. Se-mi must hide for 100 days and outwit evil schemers, evading dangerous rivals and assassins. As she disguises herself as Boo Se-mi, she works as a kindergarten teacher. The villagers love her, but single father Jeon Dong-min, a strawberry farmer, remains wary of the perfect teacher. Se-mi is his son’s homeroom teacher at the kindergarten. An unexpected love story and friendship blossom amidst the deception. This story blends thriller and romance, with life-or-death stakes.
Each of these new dramas brings its own flavor, from suspenseful thrillers and heartwarming romances to ambitious sagas and makjang-style soapy twists. These releases promise a joyful delight in September 2025 for K-drama fans.
So, which ones have already landed on your must-watch list? Let us know in the comments below!
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