The Defects

7.9
2025

An action thriller depicting the revenge of children who barely survived the brink of death after being abandoned by their adoptive parents.

Production

Logo for Group Eight

Trailers & Videos

Thumbnail for video: "The Defects" Kdrama (2025) Main Trailer ENG SUB

"The Defects" Kdrama (2025) Main Trailer ENG SUB

Seasons

8 Episodes • Premiered 2025

Still image for The Defects season 1 episode 1: Eye Shopping

1. Eye Shopping

9.5

Ahyeon and the children, who live as if they were dead after being abandoned, repeat harsh training to protect themselves. Taesik, who has been rescuing children without the organization knowing, makes a decision to save the new 'recall' target.

Still image for The Defects season 1 episode 2: Quality Dissatisfaction

2. Quality Dissatisfaction

9.0

Ah-hyun and the kids try to run away as Tae-sik has planned for them. However, Jung-hyun, who had been keeping an eye on them, picks up their trail, putting them in danger. As the truth behind the brutal "refund" system comes to light, the kids vow to take revenge on the adults. Their first target is So-mi's adoptive parents.

Still image for The Defects season 1 episode 3: Survivors

3. Survivors

9.0

After being disowned by their adoptive parents, Ah-hyun and the kids live as if they are dead. They endure brutal training, determined to protect themselves. Meanwhile, Tae-sik, who has been secretly rescuing children from the malicious organization, makes a bold decision to save a new "refund" target.

Still image for The Defects season 1 episode 4: Mom

4. Mom

7.5

To put an end to the inhuman adoption and refund system, Ah-hyun and the kids set out on a daring mission to confront the head of the evil organization. With fierce determination and a carefully crafted plan, they infiltrate the organization's bunker to strike from within. But once inside, Ah-hyun uncovers a devastating truth behind the system.

Still image for The Defects season 1 episode 5: Useful Child

5. Useful Child

8.5

The kids risk their lives to save their guardian, Ah-hyun. To do so, they're in desperate need big money, forcing them to confront Ju-an's adoptive father. Their plan is to steal offerings from his church. Meanwhile, Se-hee's ambition to seize even greater power pushes her toward devastating choices that could change the world.

Still image for The Defects season 1 episode 6: Real Name

6. Real Name

8.0

Framed for murder, Ah-hyun and the kids turn to the only adult they trust, Detective Choi. Meanwhile, the unexpected and unwanted return of of Seok-su, the adoptive son who was believed to be dead, throws Kwon Kang-man into a crisis, leading him to seek ways to put an end to the adoption on his own.

Still image for The Defects season 1 episode 7: D-Day

7. D-Day

7.0

The kids barely make it out alive from the fire, but with a tragic loss. Fueled by grief and rage, they vow revenge against the monster once more. Meanwhile, Kim Se-hee sets her sights on a refund project that is far more massive, ruthless, and shocking than Ah-hyun and the kids could have ever imagined.

Still image for The Defects season 1 episode 8: Final Refund

8. Final Refund

7.0

What begins as a camping trip soon turns into a living nightmare. Kim Se-hee's inhumanity reaches its peak as she executes her plan to massacre the "defects." To stop her once and for all, Ah-hyun and the kids rise up against her and her team, risking their lives for all the lives to avenge the ones already lost and protect those who could be next.

Cast

Photo of Yum Jung-ah

Yum Jung-ah

Kim Se-hee

Photo of Won Jin-ah

Won Jin-ah

Kim Ah-hyun

Photo of Choi Young-jun

Choi Young-jun

Wu Tae-sik

Photo of Dex

Dex

Jeong-hyun

Photo of Ahn Ji-ho

Ahn Ji-ho

Ju-ahn

Photo of Son Jong-hak

Son Jong-hak

Kwon Kang-man

Photo of Song Young-gyu

Song Young-gyu

Yoon Se-hoon

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