A vicious suicide incident recently occurred in a key high school in the city. The sophomore student union president Man Xing committed suicide by jumping off a building for no reason. However, the suicide attempt resulted in paralysis and he is still unconscious in the intensive care unit. Some people claimed that they saw Man Xing having an argument with her childhood friend Lu Weixiao on the rooftop a few minutes before she committed suicide. Under pressure from rumors, the head teacher of Class A sent Lu Weixiao, who was number one in grade, to the class with the lowest grade, and carried out the "punishment" that Class A classmates asked her to give Lu Weixiao. When the top grader with both good character and academic performance is sent to the messy last shift of the crane, who conquers whom in the end? Who has been saved? The story begins here...