On the mysterious and magnificent western wilderness plateau, at the end of a hiking line, my friend Wang Shuo met a lone girl named Yu Na. Because of Wang Shuo's rash behavior, Yu Na broke into the no-mans zone of the "forbidden zone". Four years ago, Wang Shuo's girlfriend was missing because of a person's hiking trip. Yu Na's move made Wang Shuo blame and worry, so he decided to go to find Yu Na. In the end, Wang Shuo and Yu Na reunited, strangers and men and women, wilderness, but Wang Shuo did not know that a thrilling and astounding journey was waiting for him