Series synopsis
Big Mouth, also known as 빅마우스 is a South Korean mystery drama crime television series that premiered on MBC on July 29, 2022. It ended on September 17, 2022. It was created by Jang Young-cheol, Jung Gyeong-sun. It stars Lee Jong-suk, Yoona, Kim Ju-hun and Kwak Dong-yeon.
A lawyer with a ten-percent winning rate is caught up in a murder case and becomes the notorious and genius con artist, Big Mouse, overnight. In order to survive and protect his family, he tries to reveal the true colors of the privileged people involved in a huge conspiracy.
Premise
A lawyer with a ten-percent winning rate is caught up in a murder case and becomes the notorious and genius con artist, Big Mouse, overnight. In order to survive and protect his family, he tries to reveal the true colors of the privileged people involved in a huge conspiracy.
Premise: Coming again. For the last time.
Cast and characters
Leading cast
- Lee Jong-suk as Park Changho
- Yoona as Go Miho
- Kim Ju-hun as Choi Doha
- Kwak Dong-yeon as Jerry
- Yang Kyung-won as Gong Jihoon
- Ok Ja-yeon as Hyeon Joohee
- Oh Eui-sik as Kim Soontae
- Kim Jeong-hyeon as Jung Chaebong
Supporting cast
- Lee Yoo-jun as Han Jaeho
- Oh Ryoong as Lee Doogeun
- Yoon Seok-hyun as Cha Seungtae
- Park Hoon as Seo Jaeyoung
- Kim Kyu-seon as Ashley Kim
- Jang Hyuk-jin as Choi Jungrak
- Kim Sun-hoa as Park Miyoung
- Park Se-hyun as Jang Heejoo
- Jeong Jae-seong as Park Yoongab
- Kang Hyung-wook as No Bak
- Lee Ki-young as Go Gikwang
- Kim Dong-won as Gan Soocheol
Guest cast
- Pyo Young-seo as Jerry's sister
- Park Kwang-jae as Jiseong Mental Center Staff
- Kim Min as Police Station Student
- Kim Gyeong-min as TV Debate Moderator
- Lee Do-hye as Tak Kwang-yeon's Sister
- Lee Hyoung-hun as Tak Kwang-yeon's Brother
- Jang In-ho as Detective
- Park Jeong-bok as Prisoner 5362
- Lee Taek-geun as Kong Ji-hoon's Secretary
- Cha Si-won as Guard Han Yeon-sung
- Kwon Ban-seok as Reporter
- Jung Hyung-suk as Man in Attendance
Episodes
This series spans 9 seasons with 90 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 0 | 3 | July 15, 2022 | July 30, 2022 |
| Season 1 | 16 | July 29, 2022 | September 17, 2022 |
| Season 2 | 10 | October 5, 2018 | October 5, 2018 |
| Season 3 | 11 | February 8, 2019 | October 4, 2019 |
| Season 4 | 10 | December 4, 2020 | December 4, 2020 |
| Season 5 | 10 | November 5, 2021 | November 5, 2021 |
| Season 6 | 10 | October 28, 2022 | October 28, 2022 |
| Season 7 | 10 | October 20, 2023 | October 20, 2023 |
| Season 8 | 10 | May 23, 2025 | May 23, 2025 |
| Episode | Title | Air date |
|---|---|---|
| 1 | Episode 1 | July 15, 2022 |
| 2 | Episode 2 | July 29, 2022 |
| 3 | Episode 3 | July 30, 2022 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Episode 1 Changho, who has no money and is about to lose his wife, receives a call from the mayor of Gucheon. |
July 29, 2022 |
| 2 |
Episode 2 Changho is charged with drug abuse and locked up in Gucheon Prison. |
July 30, 2022 |
| 3 |
Episode 3 Changho needs to maintain recognition as Big Mouse to protect Miho. |
August 5, 2022 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Am I Normal? Andrew struggles to blend in after a growth spurt, Nick worries his hormones are out of whack, and Jessi and Jay get a taste of the teen runaway life. |
October 5, 2018 |
| 2 |
What Is It About Boobs? A classmate's booming bosom sends the boys into a rapture -- and leaves the girls with a raging case of insecurity. Coach Steve drops a bombshell. |
October 5, 2018 |
| 3 |
The Shame Wizard As Nick tries to figure out whether he has a shot with Gina, a mortifying encounter with Leah sends Andrew into a spiral of shame. |
October 5, 2018 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
My Furry Valentine Sappy cards. Stupid clichés. And so much pressure. For Andrew, Nick, Jessi and friends, Valentine's Day is a total freaking minefield. |
February 8, 2019 |
| 2 |
Girls Are Angry Too When a shop class mishap inspires a sexist dress code, Jessi rebels, Missy struggles to keep her alter ego in check, and Andrew gets a wake-up call. |
October 4, 2019 |
| 3 |
Cellsea Nick is bewitched by his cool new phone. A call from "Pharmacy Boy" turns Matthew into a nervous wreck. Jay finds a Netflix show made just for him. |
October 4, 2019 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The New Me At sleep-away camp, Jessi befriends her trans cabinmate, and Nick discovers his two best friends have a little too much in common. |
December 4, 2020 |
| 2 |
The Hugest Period Ever While Jessi deals with menstrual mayhem, Nick tries to avoid showering with the guys, and Missy gets a makeover from her cousins in Atlanta. |
December 4, 2020 |
| 3 |
Poop Madness On the last night of camp, bowel problems, a talent show and a hookup lead to hurt feelings. Back home, Jay and Lola throw a pool party. |
December 4, 2020 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
No Nut November To get his mind off Lola, Jay begs his pals to join him in a monthlong challenge. Missy's caught off guard by a new crush. |
November 5, 2021 |
| 2 |
The Shane Lizard Rises Eager to get his mojo back, the Shame Wizard drops in on swim class to torment the kids with bodily insecurities. |
November 5, 2021 |
| 3 |
Lovebugs As Walter the love bug coaches Nick on matters of the heart, Jesse gets fired up about protesting the school's problematic mascot. |
November 5, 2021 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The Hookup House After being snowed in with their families, the restless friends flock to Bridgeton's latest make-out spot. A new classmate catches Missy's eye. |
October 28, 2022 |
| 2 |
Twenty Two and You A DNA test leads Nick to uncover a wee family secret. Jay insists on introducing Matthew to the Bilzerian clan. Andrew puts his lovebug to the test. |
October 28, 2022 |
| 3 |
Vagina Shame From itching to grooming to late blooming: There's no shortage of fodder for shame maven Rita St. Swithens in this special episode. |
October 28, 2022 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Big Mouth's Going to High School (But Not for Nine More Episodes) With two months left in eighth grade, the incoming freshmen tour their new high school with junior hosts while Jay evades his terrifying brothers. |
October 20, 2023 |
| 2 |
Epididymitis A doctor puts Andrew on testicular rest, Nick asks Jay to help him get in shape for high school and Jessi becomes fascinated by Caitlin's breastfeeding. |
October 20, 2023 |
| 3 |
The Ambition Gremlin With no distractions, Andrew's schoolwork improves — winning his father's praise. Jessi goes a little too far when trying to emulate cool, mature Leah. |
October 20, 2023 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Homecumming With a big dance approaching, FOMO's everywhere: Missy misses school, Matthew dives into the deep end — and Andrew suspects that Other Andrew is evil. |
May 23, 2025 |
| 2 |
Cliques, Pricks, and Sonic's Dick Jessi and Jay pair up to parent a melon "baby," Missy faces her fears, and Nick and Other Andrew try to fit in with a group of ultra-rich kids. |
May 23, 2025 |
| 3 |
Why Do We Go Through Puberty? After Nick has a sudden growth spurt, Ms. Dunn takes the class inside the body of a teenager to learn about the wonders of puberty. |
May 23, 2025 |
Production
Release
| Original network/platform | MBC |
|---|---|
| First aired | July 29, 2022 |
| Last aired | September 17, 2022 |
| Runtime | 68 minutes |
| Status | ended |
| Schedule | Friday, Saturday at 21:50:00 |