Korea's biggest cursing tournament begins! Among contesters like a diss rapper and grumpy police, a legendary granny shows who the real potty mouth is.

Korea's biggest cursing tournament begins! Among contesters like a diss rapper and grumpy police, a legendary granny shows who the real potty mouth is.

A national cussing battle audition is the nation's hype. People from all over the country audition in becoming the "Cussing King." However, redundant cussing auditions cause viewership to drop dramatically. The producer decides to revive the show by introducing a regular looking grandmother.