This is a story adopted from a classical Chinese novel. But the story in the play is a different account to the original novel. This is a traditional play but may have different arias with different performing styles. Once upon a time in the Mountain E-Mei, there is a White Snake and Black Snake.

The White Snake changed into a very beautiful girl, named BAI Su-Zheng (Qing Yi). The Black Snake also became a lovely maid, named Xiao Qing (Wu Dan). They went to the West Lake of Hang Zhou (Hangchow) for a visit.

They were attracted by the beauty of the place. One day over the Duan-Qiao bridge came a young man named XU Xian (Xiao Sheng). BAI immediately fell into an unrequited love with him. To help her sister, Xiao Qing set a trick to let it rain and they took a tree as shelter. XU Xian opened his umbrella and got closer to the girls. When he saw them, he offered his umbrella and then asked them where they lived.

Very quickly, Xiao Qing told him they lived somewhere near West Lake. A boat was then in sight. XU Xian called it over, paid the boatman and asked him to ship the two ladies to their destination and himself home. He lived with his sister's family. On the boat, they talked a little. BAI Su-Zheng began to get to know XU Xian a little more. The rain gradually stopped. When the boat made its first stop, Xiao Qing made it rained again.

So XU Xian told them to keep the umbrella and he would get it back next day. Xiao Qing told XU that nearby there was a red mansion, which was their home. The next day, BAI made a red mansion with magic. XU went there as promised. They invited him to sit, and Xiao Qing made him and BAI some tea. They exchanged a few words. And Xiao Qing asked XU whether he is married. When he replied “no”, Xiao Qing told him that BAI was also unmarried too and suggested they two got married.