The 21 years old girl Lee Hayoung was once the precious daughter of one of the richest family with high dignity in the town around 1838, but her world turned upside down when her father and brother died accidently on their trip and all of their family wealth and all were taken away by her father’s brother, her own uncle. 

This situation left her all the responsibility of her family – her mother and her 8 year old little sister, so she looked around for the job and finally she found one which her father’s so-called friend help her get which was the teacher at some dorm based boy high school  outside the town in the forest. He told her that’s so appropriate for her and he knows with the principal who is so nice. But it turned out to be school which tortures students and only cares for money with the very cruel principle and his evil wife.

She wanted to run away at first when she found out but the originally kindhearted and noble Hayoung felt empathy for the students and then she decided to stay there and help the boys out. 

But we can never predict what will happen, she was especially attached to the 7 tyrants boys of that school and while she was trying to help them out, she fall in love with one of them.