Shuo Wang's fiancée disappeared When she went hiking at western Sichuan in 2014. After three months searching, rescue team found her backpack. But Shuo Wang refuse to accept the fact and deeply blamed himself. He believe his fiancée left him because he didn't go with her. Shuo Wang insisted on looking for his fiancée. His family could not stop him, then he went to western Sichuan. After he came back, he had a mental problem and kept saying something unreal. His family had to sent him to hospital for treatment. Four years later, everyone thought that he is healed. However, he was suddenly on the road to the wilderness. This time Shuo Wang met a girl named Na Yu. A wilderness journey begins.