Against the background of the late Song Dynasty and the early Yuan Dynasty, the legendary experience of the protagonist Wu Rentuya unfolds a majestic picture of the rivers and lakes. Rivers and lakes, love and hatred, family and country, everything is soul-stirring, astronomy, geography, mechanics, military formations, all of them are inferior, and all of them are excellent.
The princess of Rui, Zhao Rui, was pampered in every possible way until she reached the legal marriage age of fifteen. She escaped from marriage and ended up in the rivers and lakes. Her tangled emotions with Urentuya, and Urentuya's southern expedition to destroy the Song Dynasty led by the Mongolian army. Zhao Rui's choice between love at home and country!