Su Ziyi and Zuo Yongyan were originally a loving couple. During a field survival training organized by the school during the summer vacation, Su Ziyi was accidentally injured and was unable to participate. Unexpectedly, Li Xi and Zuo Yongyan would develop a secret love during the training. Who was the mysterious man Mu Xiao? ? Was Su Ziyi's accidental injury just an accident? What's Li Xi's conspiracy? ? ? Everything is waiting for you to uncover...