In order to revive the university mountaineering club, college freshman Lin Feng (played by Li Kaixin) meets Xia Di (played by Xing Zhaolin), a former member of the mountaineering club. After a series of coincidences, the two young people with common hobbies and dreams become more and more deeply entangled with each other, and are involved in a mountaineering accident that affected many people five years ago. Thus, a story of saving each other and testing true feelings begins. The drama uses suspense to drive the development of the story throughout, and is full of reversals. It slowly unfolds the cruel reality and beautiful youthful dreams, and conveys real emotional resonance to the audience.