In a realm where the boundaries between the earthly and the ethereal blur, a young scribe named Lin is drawn into the heart of Dongting Lake, where the Mountain's Heart of Darkness lies. The lake's Unknown Shadows beckon, and Lin must navigate a labyrinth...

In a quest to unlock Dongting Lake's cursed crypt, a hermit's golden key and ancient legends intertwine, leading to a harrowing journey through time and danger....