The scholar Zhu Xiaolian and his page Hou Xia, on their way to the capital to take the imperial examination, encounter a bandit named Meng Longtan and engage in a fierce fight. Eventually, they arrive at an ancient temple where they are persuaded to reconcile by the Monk BuDong. In the temple, Zhu Xiaolian discovers a mural depicting lifelike figures. While gazing at the mural, Zhu is taken into a fairyland called the "WanHuaLin(Forest of Ten Thousand Flowers)" by a fairy named Peony who emerges from the painting.
In the WanHuaLin, there are no men, only a group of beautiful fairies living under the strict rule of a leader known as "Auntie." Despite their unique skills, the fairies are oppressed by Auntie's authoritarian rule. Auntie forbids them from having feelings for men and is ruthless towards any man who dares to enter the fairyland without permission. In this peculiar paradise, Zhu Xiaolian meets the successor fairy Shaoyao, who helps him avoid being discovered by Auntie and safely return to the human world. However, Peony is caught by Auntie for bringing a man into the fairyland.
Upon returning to his world, Zhu Xiaolian finds that Peony on the mural is suffering as a punishment, and his page informs him that the mural is a depiction of hell. Out of a sense of righteousness, Zhu Xiaolian decides to return to the "Painting Wall" world. With the help of the Monk BuDong, Zhu Xiaolian, along with Hou Xia and Meng Longtan, enters the fairyland. To their surprise, Auntie welcomes the three guests and invites them to choose wives from among the fairies to continue the lineage of the Forest of Ten Thousand Flowers. To avoid suspicion, Zhu Xiaolian pretends to choose Peony's friend Cui Zhu as his wife, while Hou Xia and Meng Longtan also select their wives, unaware that Auntie plans to kill them after using them. Learning that Peony has been detained by Auntie, Zhu Xiaolian seeks Shaoyao's help to rescue her, embarking on a series of magical adventures.