Tempest: Release date news, cast details, streaming details and more about the upcoming Hulu K-drama thriller 

Hulu+ Disney has finally unveiled the official trailer for Tempest, one of the most anticipated political K-dramas of 2025.

Following its success with Nine Puzzles, the most-watched K-drama on the platform, Disney+ is all set to conquer the K-drama domain with its upcoming high-stakes political and crime thriller, slated for a September 10 release.

Co-directed by Queen of Tears showrunner Kim Hee-won and the veteran action choreographer Heo Myung-haeng, the screenplay for the upcoming K-drama is written by Decision to Leave screenwriter Jeong Seo-kyeong.

Tempest follows Seo Mun-ju, the US ambassador, whose husband (a presidential candidate) is assassinated in front of her. This tragedy sets the stage for a sweeping mystery as Seo Mun-ju sets out on a journey to find her husband's killer and uncover deeply buried state secrets in the process.

More on this in our story.

Release and plot details for Tempest K-drama

The world of global espionage and political conspiracies will unfold on Wednesday, September 10, 2025. The K-drama will be available to stream on Hulu and Hulu+ Disney. While the ad-supported basic plan for Hulu starts from $9.99/month, you can easily bundle this with Disney+ for $19.99/month (ad-free).

The upcoming political K-drama will debut with the first three episodes on September 10, 2025. Following this initial premiere, the series will release two weekly episodes every Wednesday. The two-part finale will be released on October 1, 2025.

The official synopsis for the K-drama reads as follows:

"The series revolves around a skilled diplomat Mun-ju who served as the UN ambassador, and an international special agent of mysterious nationality San-ho. The two embark on a mission to uncover the truth about a deadly attack that could threaten the stability of the Korean Peninsula."

The Tempest trailer features an assassination of a South Korean presidential candidate, which sets a Globe-spanning conspiracy in motion, bringing together two unlikely individuals.

Seo Mun-ju (widow of the deceased presidential candidate) is a former diplomat who finds herself in the centre of this thriller, searching for state secrets, accusations, and buried truths that could endanger Korea.

She will be protected by Baek San-ho, an international special agent with a mysterious nationality. As Tempest progresses, Mun-ju will learn that her partner is a mercenary with a shadowy past and uncertain loyalties. She will be caught in between a complex web of truth and lies, intertwining her personal and professional lives.

Who is in the cast of Tempest?

Tempest is headlined by popular South Korean actors Jun Ji-hyun and Gang Dong-won, who are at the centre of this political world.

Ji-hyun is best known for two of the most popular K-dramas, namely The Legend of the Blue Sea and My Love from the Star. She will play the character of UN ambassador Mun-ju, a former diplomat investigating the recent assassination attempt that shook Korea.

Joining her is another celebrated actor, Dong-won, who is finally making a comeback to the small screen after his 2004 K-drama Magic. The actor has recently starred in Korean movies like Peninsula, Dr. Cheon and Lost Talisman, and Dark Nuns. As San-ho, Dong-won's character is shrouded in utter secrecy and mystery, which will become an exciting sub-plot for the series.

The additional cast for the K-drama includes John Cho as Anderson Miller, Michael Gaston as Eagleton, Lee Mi-sook as Lim Ok-seon, Oh Jung-se as Jang Jun-sang, Park Hae-joon as Jang Jun-ik, Yoo Jae-myung as Yoo Un-ha, Kim Hae-sook as Chae Kyung-sin, Christopher Gorham as Ethan, and Spencer Garrett as Houser.

Tune into Tempest on Hulu+ Disney on September 10, 2025.

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