Streaming platforms are turning up the heat for K-drama fans this September, rolling out a batch of fresh releases and long-awaited favourites. From intense thrillers and heartfelt romances to star-studded sequels, the streaming giant is set to keep viewers hooked all month long. Among the most talked-about premieres are the high-octane sequel Mantis, the emotional rollercoaster You and Everything Else, and the gritty drama Queen Mantis. With several ongoing hits also reaching their season finales, September 2025 is set to be one of the busiest months for Korean drama enthusiasts. Expect romance, crime, fantasy and more.
K dramas releasing in September 2025
Mantis
The highlight of Netflix’s September lineup is Mantis, an original action thriller and the spiritual successor to Kill Boksoon. Starring Yim Si-wan, Park Gyu-young, and Jo Woo-jin, the film is directed by Lee Tae-sung and premieres on September 26. The plot centers on a highly trained assassin who returns from a brief getaway only to find the contract-killer underworld in turmoil. As old enemies resurface, including a former protégé and an infamous hitman, he is drawn into a deadly battle for control and survival.
You and Everything Else
You and Everything Else is set to premiere on September 12. With 15 episodes, the melodrama features Kim Go-eun and Park Ji-hyun in lead roles as childhood rivals whose relationship takes an unexpected turn. At 42, Sang-yeon (played by Park) reconnects with her former friend Eun-jung (Kim) to make a deeply personal request, to accompany her on one final journey,a long with themes of terminal illness and assisted dying. The series is already generating significant anticipation and conversation.
Queen Mantis
Queen Mantis is set to premiere on September 5, with fresh episodes releasing weekly. The SBS crime thriller spans eight episodes and features Go Hyun-jung and Jang Dong-yoon in lead roles. The plot centers on Jung I-sin, a woman notorious for having killed five men decades earlier. Years later, her son, now serving as a police officer, is drawn into a tense investigation as he confronts both the dark secrets of his mother’s past and the emergence of a copycat murderer, setting the stage for an intense battle between personal history and present danger.
Confidence Queen
The highly anticipated crime-comedy K-drama Confidence Queen brings a fresh Korean adaptation of the popular Japanese series Confidence Man JP. Starring Park Min-young in the lead role, the show follows the story of Yi-rang, a sharp and resourceful woman who transforms into a master con artist. She joins forces with James and Gu-ho, forming a dynamic trio of swindlers who target high-profile scammers, exposing their schemes while reclaiming their illicit fortunes. According to IMDb, the drama promises a mix of wit, suspense, and stylish deception, making it one of the most anticipated K-drama releases of the year.
Tempest
The upcoming high-profile K-drama Tempest boasts a star-studded cast, including Jun Ji-hyun, Gang Dong-won, John Cho, Lee Mi-sook, Park Hae-joon, and Kim Hae-sook. Set in contemporary South Korea, the gripping political thriller revolves around Seo Mun-joo (Jun Ji-hyun), a brilliant diplomat and former ambassador to the United States, who joins forces with Sang-ho (Gang Dong-won), an elite international agent. Together, they explore the mystery behind a shocking attack that threatens the fragile stability of the Korean Peninsula, as per Disney Plus.
The Murky Stream
The Murky Stream features Rowoon, Shin Ye-eun, and Park Seo-ham in pivotal roles. Set during the Joseon dynasty, this historical drama tells the story of three individuals — a feared gangster, a principled merchant, and an ambitious official-in-training, whose destinies become deeply entangled against the backdrop of political intrigue, corruption, and shifting power dynamics.