‘The Rat (WT)’ Netflix K-Drama: Filming Begins April 2025 & What We Know So Far

Sol Kyung Gu and Ryu Jun Yeol will star in Netflix's k-drama thriller The Rat (WT).

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The Rat Netflix K Drama Preview

Picture: Sul Kyung Gu (left) and Ryu Jun Yeol (right)

Another exciting webtoon adaptation is coming to Netflix in the near future: The Rat (WT). The K-drama stars Sul Kyung Gu and Ryu Jun Yeol. Filming is ongoing and will take place for most of 2025. We expect to see The Rat (WT) on Netflix sometime in 2026. Here’s what we know so far.

The Rat (WT) is an upcoming South Korean Netflix Original thriller directed by Kim Hong Seon. It is the adaptation of the webtoon of the same by Ludvico.


What is the plot of The Rat (WT)?

A synopsis has been provided for The Rat (WT):

“Moon Jae, a reclusive writer, finds that the fingerprint recognition on his phone fails, and even the friend who had helped him manage everything disappears. With no way left to prove that he is truly Moon Jae, he learns that a mysterious person called “Rat” has taken his name, identity, and fortune. Determined to reclaim his life, he begins to pursue him.”


Who are the cast members of The Rat (WT)?

Ryu Jun Yeol plays Je Mun Jae. The actor previously starred in the Netflix K-drama The 8 Show. He previously starred in leading roles in K-dramas such as Lost, Lucky Romance, and Reply 1988. He has also starred in films such as Alienoid, Little Forest, A Taxi Driver, and Money.

The character of Je Mun Jae has been described as:

“A novelist living in isolation due to social phobia. Leading a quiet life, the same every day, Moon Jae suddenly finds himself stripped of everything by the mysterious “Rat”.”

Ryu Jun Yeol The Show Netflix K Drama

Picture: Ryu Jun Yeol (left) and as Bae Jin Su in The 8 Show (right) – Netflix

Sul Kyung Gu plays No Ja. The actor starred in the Netflix K-drama The Whirlwind. He has predominantly starred in films over dramas, having starred in Netflix’s Mantis and Kill Bok Soon. He also starred in The Moon, Kingmaker, and The Book of Fish.

The character of No Ja has been described as:

“A loan shark who also runs a private detective agency and will do anything for money. No Ja has been tracking Moon Jae since he disappeared after borrowing money, and when he willingly shows up three years later, Moon Jae asks for his help in uncovering the identity of the “Rat.” Drawn in by the chance to recover his money, No Ja becomes entangled in the case.”

Sul Kyung Gu The Show Netflix K Drama

Picture: Sul Kyung Gu (left) and as Cha Min Gyu in Kill Bok Soon (right) – Netflix


What is the production status of The Rat (WT)?

Development
Filming Scheduled
Filming Ongoing
Post-Production

Filming for The Rat is scheduled to take place between mid-April 2025 and November 2025.


When is the Netflix release date for The Rat (WT)?

Filming will take place for most of 2025, so Field Mouse is most likely to be released in the second half of 2026. 


Are you looking forward to watching The Rat (WT) on Netflix? Let us know in the comments below!

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Jacob Robinson is a seasoned entertainment journalist who joined What’s on Netflix seven years ago in 2018. Jacob brings a diverse perspective to streaming coverage. He specializes in tracking Netflix's expanding library of anime and K-dramas in addition to other TV and movie coverage in addition providing in-depth analysis. Based in Norwich, UK.