The sitcom drama is based off of a webtoon of the same name, telling the story of Jo Seok (played by Lee Kwang Soo), whose dream is to become a webtoon artist, and his crazy, extraordinary family. 

'Sound of Heart' became the most-watched web drama of all time after being broadcast on Naver's TV Cast, and became a hit in China as well, despite China's current ban on Korean entertainment. It will begin airing on KBS2 beginning February 1, while Netflix will have it starting February 24. 

It's also been revealed that the production company is considering a 2nd season, due to high demands from viewers and fans.