Based on the longest-running web-based comic series "Ma Eum Ui Sori" in Korea, "Sound of your heart" is a story about Cho Seok, an aspiring comic writer, and his strange family.
With their daughter Yul-bong at home, Seok can hardly concentrate on his work and decides to work in Bu-ook's car where he gets stuck.; Ae-bong's mom gets lasik surgery and is unable to see following the procedure. Seok takes her around on piggyback for the next few days.