Female college student Song Xingmian saw a help-seeking advertisement pop up on her computer desktop. It was a remote mountain village without primary school teachers. Song Xingmian decided to become a volunteer teacher out of pity. Unfortunately, when he arrived in the village, he was imprisoned in a underground cave and lived an inhuman life, which was extremely miserable. There are many other female college students imprisoned in the underground kiln, all of whom have just graduated and come to teach... The dark side of human beings is beyond your imagination. Young college students who are simple and ignorant of the world are deceived, and after inhuman torture and beatings, they will eventually be sold to the mountains as wives. Song Xingmian endured the humiliation, pretended to submit, and battled wits and courage with the criminals. Finally, she was successfully rescued two years later. She is no longer the girl she used to be... 93