MBC unveiled a brand new poster and teaser for Lee Jong-suk starrer Big Mouth. The new poster highlights Lee Jong-suk’s intense gaze as the camera focuses on his battered expressions. In another poster, he marches on as he is cheered on by his prison inmates.♡ LJS My Boo - Big Mouth on July 29♡💞@LJSmybooLEE JONG SUK IS BACK TO GIVE US HIS BEST PERFORMANCE YET SEEN!#LeeJongSuk #BigMouth8618LEE JONG SUK IS BACK TO GIVE US HIS BEST PERFORMANCE YET SEEN!#LeeJongSuk #BigMouth https://t.co/fNH6a7TcjPMBC also released a new teaser video for the show. The newly released teaser shows two very different sides of Park Chang-ho, Lee Jong-suk's character.In the first instance, he seems like a clumsy lawyer who gets nagged by his wife Go Mi-ho, played by Girls’ Generation’s YoonA. He is treated like a pushover by his clients. One of them complains:“He has no skills, and he’s all mouth.”A criminal case goes awry and he lands up in a prison, where life turns chaotically bad for him. In prison, he gets into fights with other inmates and things go south for him.Things change when he resolves to fortify himself and grow brave after someone threatens him and his family. He aims a gun at someone and says in a chilly voice that he won't allow himself to be taken advantage of again.“In order to survive, you need to be the real thing. I’m going to start hunting. I’m going to do it my way according to the ‘Big Mouse’ law. From now on, I’m the real Big Mouse."He also teams up with a certain Jerry, played by actor Kwak Dong-yeon, piquing fans' curiosity about their friendship.Lee Jong-suk’s Big Mouth: Everything we know so far View this post on Instagram Instagram PostBig Mouth is a hard-boiled noir drama which revolves around Lee Jong-suk’s character Park Chang-ho, a third-rate lawyer who finds himself involved in a murder case that turns him overnight into a genius conman known as “Big Mouse.”In order to survive and protect his family, he must expose a huge conspiracy among the privileged upper classes, and thus he must find a way to survive in a brutal world where mercy doesn't exist.$3 $3 $3Paired opposite him for the first time is Girls’ Generation’s YoonA who plays the role of Go Mi-ho, a confident and hardworking nurse who is married to Park Chang-ho.The couple will team up together to face off against one another, fight against people in power and protect each other.Fans' reactions on TwitterFans are super stoked to see Lee Jong-suk on the TV screen again! Not only is it his big comeback into K-dramas, it is also his first time being paired opposite Girls’ Generation’s YoonA.Naturally, fans are excited to see what is in store for them.♡ LJS My Boo - Big Mouth on July 29♡💞@LJSmybooPOV: Mi Ho wants to just eat ramyeon but he ordered steak 🥩 that’s why she’s angry . Kdrama lovers would know why lol🤭#LeeJongSuk #YoonA #BigMouth 31692POV: Mi Ho wants to just eat ramyeon but he ordered steak 🥩 that’s why she’s angry 😠. Kdrama lovers would know why lol🤭#LeeJongSuk #YoonA #BigMouth https://t.co/lRbb3jqdaQg 🐭💉| big mouth (07.29)@ljsbsotmi can sense the best actor nominations on lee jong suk he's so unbelievable!!!!! #BigMouth #LeeJongSuk498i can sense the best actor nominations on lee jong suk he's so unbelievable!!!!! #BigMouth #LeeJongSuk https://t.co/BZhAvqkYm1♡ LJS My Boo - Big Mouth on July 29♡💞@LJSmybooI imagine couple twinnings to be lovey dovey and clingy but our couple is an exception I guess lol 🤣🤣They’re so chaotic!!! 🗣🗣🤭🤭#LeeJongSuk #YoonA #BigMouth416129I imagine couple twinnings to be lovey dovey and clingy but our couple is an exception I guess lol 😂 🤣🤣They’re so chaotic!!! 🗣🗣🤭🤭#LeeJongSuk #YoonA #BigMouth https://t.co/vct7M9RTte하닌 | #BigMouth@sukcalmEXCUSE ME LEE JONG SUK!!!!469EXCUSE ME LEE JONG SUK!!!! https://t.co/aitQa635uoMBC’s new Friday-Saturday drama, Big Mouth, will premiere on July 29 at 9:50 pm KST (6:20 pm IST).