After the rebellious and strong 17-year-old Ou Kelan broke up with her mother, she met the "school idol twins" - the gentle and talented Yi Shuixuan and the cold and strong Yi Shuihan when she was at her most vulnerable. With their help, Ou Kelan, who had lost his memory, slowly integrated into society and was no longer alone with only Wang Yuxin for company. However, Ou Kelan's unknown past and pain have always been a tie between the two brothers Xuan and Han, so Han took Kelan to adapt to the darkness in the dark night, and then fell into a completely different life...