In the early years of the Republic of China, in the remote Zishanlingshan Village, the Jiang family, a family of medicine shops, controlled most of the village's livelihood. Hao Lin, a young tenant farmer, and Su Er, a maid from the Jiang family, have known each other since childhood. Their love has gradually deepened, but it is difficult to bridge the gap between status and class. Jiang Xuanhe, the second young master of the Jiang family, returned from the provincial capital. While getting along with Su'er, he also developed complex and secret emotions for her.
During a search for the precious medicinal material Purple Ganoderma lucidum into the mountains, Haolin disappeared mysteriously and has not been heard from since. Half a year later, strange rumors began to spread in the village: someone saw a giant walking Ganoderma lucidum in the depths of the mountain forest, shaped like a human silhouette.
As the investigation deepened, Su'er gradually discovered that the soul of a person was sealed in that Ganoderma lucidum, and this secret was related to Jiang Xuanhe's long-hidden crime. In the depths of the human heart where love, jealousy and regret are intertwined, the mountains and forests of Zishanling gradually reveal a story about obsession and redemption.
