Qing Qing, a jewelry designer, takes on a mysterious order to save her company, and must find the "Harmony of Heaven and Earth" green gem, the supreme treasure of the Glistening Wave Seven-Hole Bridge Scenic Area. Jing Yao, her suitor, finds the gem and presents it to her, only for the gem to be stolen and surveillance footage destroyed. Everyone travels to Glistening Wave to track down clues. Later, the truth comes to light: Jing Yao has conspired with Meng Lu, Qing Qing’s best friend, to scheme for profit, attempting to seize the paired green gems for themselves, and their actions lead to the death of undercover officer Lao Meng. The police successfully solve the case and arrest all suspects. Qing Qing learns by chance that Meng Lu is her half-sister from the same father, and the two recognize each other smoothly. In the end, the two sisters are appointed as scenic area ambassadors, donate both green gems to a museum, and contribute to the development of local cultural tourism.