Byung Woo and Hee Su are hearing impaired brother and sister who have learned oralism. Byung Woo since graduating from high school have worked at the 24 hour fast food restaurant for 2 years but is still a minor part timer. Hee Su meets Dong Jun who she got to know through an online game.
Kim Li-hoo
Seo Ye-rin
Ryu Jun-yeol
