Big Mouth (2022) | K-Drama: Synopsis | Cast | Trailer & More

Episode 5

Title: 빅마우스 / Big Mouth
Also Known As: Big Mouse
Genre: Life, Drama, Medical
Director: Oh Choong-Hwan
Writer: Ha Ram
Episodes: 16 (To Be Confirmed)
Broadcast network: MBC
Release Date: July 29, 2022
Air time: Friday & Saturday 22:00 KST


Park Chang Ho works as a lawyer with a measly 10% winning rate. He is a talkative person and, because of this people call him Big Mouth. He happens to get involved in a murder case and he is somehow fingered as genius swindler Big Mouse. Due to this, Park Chang Ho finds himself in a life-threatening situation.

Meanwhile, Go Mi Ho is Park Chang Ho’s wife and she works as a nurse. She has a beautiful appearance and a personality that is both wise and brave. She helped her husband become a lawyer by supporting him financially and psychologically. Go Mi Ho learns that Park Chang Ho is suspected to be the genius swindler Big Mouse and attempts to clear her husband’s name.


  • “Big Mouth” takes over MBC’s Fri & Sat 22:00 time slot previously occupied by “Doctor Lawyer.”


Main Cast

Lee Jong-Suk as Park Chang-Ho
Lim Yoon-A as Go Mi-Ho

Supporting Cast

Kim Joo-Hun as Choi Do-Ha
Ok Ja-Yeon as Hyun Joo-Hee
Yang Kyung-Won as Kong Ji-Hoon
Kwak Dong-Yeon as Jerry

Big Mouth OST

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Episode 1

Big Mouth: Episode 1

Chang-ho, who has no money and is about to lose his wife, receives a call from the mayor of Gucheon.

Episode 2

Big Mouth: Episode 2

Chang-ho is charged with drug abuse and locked up in Gucheon Prison.

Episode 3

Big Mouth: Episode 2

Who made Changho, Big Mouse, and why? However, he needs to be recognized as such to protect Miho.

Episode 4

Big Mouth: Episode 2

Is Changho really Big Mouse? Gong Jihoon makes a bet with Changho to find out his true identity.

Episode 5

Big Mouth: Episode 2

Jihoon approaches Miho to find Seo Jaeyoung’s thesis. Does Miho know Changho’s true identity?

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