Watch HDToday. A series of severe criminal cases happened in Yangguan, an industrial town in Northwest China. Chen Hanzhong, the detective on the case, commutes to the gobi, fallen villages and desolate industrial landscapes with colleagues day after day. They got some clues, and more questions as well. As time passed, they realized that to solve the case is also to solve the mysteries in their lives. Suddenly, work and life, memory and reality, all begin to interweave at a certain moment.