Do-ga-ni plot
"The hideous truth, concealed far too long."
Kang In-ho (Gong Yoo) is the new art teacher at Benevolence Academy, a school for deaf students in the fictional town of Mujin in North Jeolla. He has a dark past: his wife was a student who committed suicide and his daughter is in the care of his mother. In-ho is hired to tutor students at school, but he soon discovers a dark secret at play at this faculty. Together with Seo Yoo-jin (Yu-mi Jeong), secretary of a human rights organization, he helps the young people in their struggle.