This chilling thriller is based on the Kakao Entertainment Webtoon “Field Mouse,” which draws inspiration from an ancient Korean folktale about a rat becoming human by consuming clipped fingernails. The series follows a reclusive novelist who forms an unlikely alliance with a loan shark—who once pursued him—to hunt down the enigmatic “Rat” who has taken everything from him.
Ryu Jun Yeol (Revelations, The 8 Show) takes on the role of Moon-jae, a sociophobic novelist living a secluded life. One day, his phone no longer recognizes his fingerprint, and his only friend, who managed all his affairs, vanishes. Stripped of his name, identity, and finances, Moon-jae discovers that a mysterious “Rat” has stolen his entire existence. Determined to reclaim his life, he embarks on a quest to uncover the truth.
Sul Kyung Gu (The Whirlwind, Kill Boksoon) transforms into No-ja, a relentless loan shark who runs a private detective agency and stops at nothing for money. No-ja, who previously hounded Moon-jae for an unpaid loan, is stunned when Moon-jae reappears three years later, seeking help to track down the “Rat.” While initially focused on recovering his money, No-ja quickly gets drawn into the hunt. This series marks the first on-screen collaboration between these two seasoned actors, Ryu Jun Yeol and Sul Kyung-gu.
The project is helmed by director Kim Hong-sun, renowned for his expertise in genre shows such as Dear Hongrang, Money Heist: Korea – Joint Economic Area, The Guest, L.U.C.A.: The Beginning, and Voice. The screenplay is penned by Lee Jae-gon, known for classic crime shows like Special Affairs Team TEN and compelling, character-driven narratives like A Model Family. Their combined mastery of thrillers and mysteries promises a high-caliber, mind-bending series.
Adding to the anticipation, Kakao Entertainment—known for its exceptional skill in adapting webtoons and web novels into hits like Karma, Call It Love, and Business Proposal—is co-producing the series alongside CJes Studios and H.House.
Stay tuned for more updates on The Rat (WT), coming soon only to Netflix.
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