Mountain flowers, all the flowers in the mountains are called mountain flowers. There is no professional classification and naming, they are collectively called "mountain flowers". Just like everyone in this village, in the mountains, information is blocked and transportation is inconvenient. Even if they die, not many people know their names. They are collectively called "villagers". Wu Yingxia, the only teacher in the village, passed away, and her adopted daughter Hao Huilan took over her adoptive mother's last wish to support the entire school. The young and beautiful Huilan certainly wanted to go out and see the outside world. No one wanted to be a "mountain flower" in the village for a lifetime. The meager teacher's salary was of no help in fulfilling her wish. Villagers said that they often saw Huilan using a public phone to make calls, as if they were talking about borrowing money. Niu Xiaoshan in the village admired Huilan and helped her life very much. Seeing Huilan preparing money, Niu Xiaoshan also did his best for her. After that, Huilan disappeared, leaving 12 students behind and evaporating. The villagers guessed that she went out to work and the school was also preparing to merge. A few months later, people found Huilan's body in the mountains. The villagers were immediately in an uproar. Who was the murderer? Was it Niu Xiaoshan, who turned love into hate, or Huilan's sickly adoptive father, or the mysterious man she chatted with on the pay phone every week to borrow money.