The Defects: OTT Release Date, Cast, Episode Count, Where To Watch, And More On Won Jin-ah's K-Action Thriller

K-Drama ‘The Defects’ starring Yum Jung-ah and Won Jin-ah, currently streaming with rising buzz. Here's everything to know about its release, cast, episodes, and where to watch.
Korean Drama The Defects

The Defects Release Date, Cast, Episode Count, And Where To Watch On OTT: A new K-drama ‘The Defects’, is quietly making headlines with its bold storytelling and standout cast. Starring Yum Jung-ah and Won Jin-ah, ‘The Defects’ arrived with little noise but has quickly become a must-watch thriller of 2025. With a sharp cast and a striking atmosphere, this new Korean thriller is already stirring quiet curiosity among K-drama fans.

With just eight episodes, it brings together a powerful cast, a haunting mood, and striking visuals that are already getting viewers talking. From its tightly written scenes to its suspenseful tone, this drama is shaping up to be one of this season’s most talked-about surprises. Here is everything you need to know about K-Drama ‘The Defects’:

The Defects Release Date And Time

'The Defects’ premiered on July 21, 2025, on the South Korean network ENA and airs every Monday and Tuesday at 10:00 KST.

The Defects Total Episodes

‘The Defects’ has eight episodes in total, each approximately one hour in duration. The release schedule is two episodes per week, culminating with the finale on August 12, 2025.

  • ‘The Defects’ Episode 1 Release Date – July 21, 2025
  • ‘The Defects’ Episode 2 Release Date – July 22, 2025
  • ‘The Defects’ Episode 3 Release Date – July 28, 2025
  • ‘The Defects’ Episode 4 Release Date – July 29, 2025
  • ‘The Defects’ Episode 5 Release Date – August 4, 2025
  • ‘The Defects’ Episode 6 Release Date – August 5, 2025
  • ‘The Defects’ Episode 7 Release Date – August 11, 2025
  • ‘The Defects’ Episode 8 Release Date – August 12, 2025

Korean Drama The Defects: Plot Summary

‘The Defects’ is based on Kakao Webtoon of the same name that won the Top Creative Award at the SPP International Content Market Webtoon Awards in 2017. According to IMDb, ‘The Defects’ is about, “A work dealing with buying abandoned children by their parents and selling them based on price and rating, as well as the illegal adoption cartel that provides a free refund service if you do not like the child while raising it.”

The drama centres on a horrifying illegal adoption ring masked as a charity.

The Defects: Cast And Character

At the core of the cast is Yum Jung‑ah, portraying Kim Se‑hee, a respected hospital chairwoman who secretly orchestrates the child‑trafficking network.

i) Won Jin‑ah plays Kim Ah‑hyun, a survivor returned by her adoptive parents.

ii) Choi Young‑joon portrays Woo Tae‑sik, an internal member who feels guilt and works to protect the children.

iii) Dex, aka Kim Jin‑young, plays a villainous role in his acting debut.

iv) Supporting roles include Oh Seung-jun, Yum Jung-ah, and Byun Jun-seo.

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Where To Watch Korean Drama The Defects On OTT?

    • International viewers can stream ‘The Defects’ on KOCOWA+, with multiple subtitle options available.
  • In South Korea, viewers can watch it on TVING and ENA.
  • The drama is also available on Amazon Prime Video in selected regions.

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The Defects: Why It’s Gaining Attention?

From the moment the trailer dropped, audiences have been reacting to the drama’s bold premise and the social themes. The story’s exploration of child trafficking, moral corruption, and the psychological toll on abandoned children sets it apart from typical thrillers.

The drama has already released episodes 1 and 2, and viewers have praised the cast’s performance and plot so far. Soompi states, “According to Nielsen Korea, the premiere episode of ENA’s new drama ‘The Defects’ earned an average nationwide viewership rating of 1.7 percent.” “It recorded over 51 million views”, states The Korea Times.

If you’re drawn to gripping thrillers, suspense, and action, ‘The Defects’ deserves to be on your watchlist.


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Image credit: IMDb
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