The heroine is born ugly, can understand the words of birds and beasts, and is regarded as an ominous "monster" by the villagers. In order to get rid of this "burden", her parents betrothed her to a notorious bully from a neighboring village. On the eve of the wedding, Yun Zhiyu escaped with the help of the little sparrow and stumbled into the legendary forest of beasts where "there is no return".
The forest is surrounded by dangers, but Yun Zhiyu's talent for "animal language" has become his greatest reliance here. She rescued the injured spirit fox, befriended the arrogant lark, helped the lost cub, and gradually made her first animal friends in the forest. At the same time, she also discovered the secret hidden deep in the forest: a gray mist called "Desolation" was eroding the forest, causing animals to become violent, lose their mind, and even wither and die.
In order to protect his new home and friends, Yun Zhiyu decided to find out the source of the fog. In the process, she met the male protagonist Zhu Yuan, who was the guardian of the ruins and was also tracing the source of "Nirvana". From the initial misunderstanding to the two joining hands later, Yun Zhiyu used her kindness and wisdom to unite more and more animal groups and formed the "Forest Alliance"; while Zhu Yuan relied on her knowledge of ancient formations to guide her in the direction. Together they experienced the test of the four seasons, defeated the greedy trappers who wanted to use the power of "Nirvana", and finally discovered that "Nirvana" originated from a forgotten ancient ruins and was a sign of imbalance in the world. At the end, Yun Zhiyu, with the support of all the beasts, used the purest heart of nature and the power of life to calm the restlessness of the ruins, purify the "nirvana" atmosphere, and become the truly recognized guardian of the forest - the king of all beasts.
