Singer and actress Lim Yoona has transformed into a nurse with full vitality and fierceness.

MBC-TV's new Friday-Saturday drama 'Big Mouth' (written by Kim Haram and directed by Oh Choong-Hwan) released the first still cuts during filming of Lim Yoona, earlier today. Lim took the role of the main character, Go Mi-Ho.

'Big Mouth' is the story of a convicted lawyer Park Chang-Ho, played by Lee Jong-Suk, who accidentally gets involved in a murder case. In order to survive and protect his family, the lawyer becomes a “big mouth” and exposes a huge conspiracy among the privileged upper class.

In the storyline, Go Mi-Ho is a nurse and wife of lawyer Park Chang-Ho, where she fiercely jumps into the case and risks everything to get her husband out of the picture.

In one of the still cuts, Go Mi-Ho can be seen perfectly attuned to the character she plays. Lim Yoona can be seen focused on caring for a patient, as well as looking back at a group of reporters who want to interview her for her husband’s case.

The images released have only raised expectations for Lim’s acting skills. Also, many are now left in anticipation to see if she can succeed in bringing her husband out of the murder case.

An official from the production team remarked, "Lim Yoona is the perfect actress that can express the hardship Go Mi-Ho has to go through, who is a strong willed and fierce character that does not break, no matter what happens.”

K-drama 'Big Mouth' will premiere in July following on from 'Doctor Lawyer'.