I am sentimental, but the passage of time is ruthless. This is a story about five young people who ventured into the world together, but eventually parted ways. In the story, there is a smart and generous royal sister, a cute lolita, a charming and passionate beauty, a pure and handsome young man, and a sinister swordsman. In this river and lake, they grow up like us, struggling in the whirlpool of their own destiny, experiencing sweetness and pain, and embarking on different paths in their own joys and sorrows. The wind and frost swords of the river and lake change everyone, whether they are sentimental or ruthless!