In the mist in the mountains of western Hunan, botanist Shen Zhiyi accidentally sprained his ankle while collecting herbs and was rescued by A Ci, a descendant of the Miao witchcraft family. Aci was taciturn but gentle. He protected her in a bamboo forest and took good care of her, but in this gentleness, there was a paranoid possession that could not be touched by others - he regarded her as the only light that illuminated the shackles of his mission, and vowed to keep her in the mountains forever.
With the appearance of cousin Ayao, the peace was completely broken. Ayao wears the mask of a sweet white lotus and pretends to be close to Shen Zhiyi, while spreading the rumor that "Aci saved her to nourish the family's secret poison with her essence and blood". She also uses Awu, a hunter who admires her, to sow discord time and time again. And A Ci's possessiveness became more and more intense, and she lost control of her emotions just because she said one more word to others, which made Shen Zhiyi fall into the confusion of "does he love her or use her?"
The heavy pressure of the family mission, A Yao's every step of calculation, and A Wu's unrequited love have torn the relationship between the two to pieces. When the elder revoked A-Ci's status as A-Ci's successor because of A-Yao's slander, he resolutely gave up everything and took Shen Zhiyi on the road to escape. On the way, Aci finally confessed: The "Tongxingu" guarded by the family needs to be conquered by people who truly love each other to resolve the backlash. His love for her was never an accessory to his mission.
After misunderstandings and escapes, Shen Zhiyi finally sees clearly the deep affection behind A Ci's paranoia, and also sees through A Yao's green tea intentions. In the end, under the witness of Tong Xin Gu, the two had a mutual understanding. The elder suddenly woke up, A Wu let go of his obsession, and A Yao got the punishment he deserved. This entanglement that started in the mountains finally came to a conclusion after many stumbling blocks.
