When her parents' jobs were transferred, Yu Yiye returned to her hometown to continue her studies. She thought there was no way she'd run into them by chance, but at her new school she unexpectedly encountered her four younger sisters, who were quadruplets. For various reasons in the past, Yiye had grown distant from her sisters. But in her new class, she met Ye Xiaoqian, who went out of her way to befriend her. With Xiaoqian's help, Yiye got through school life smoothly. At the same time, she discovered that she and Xiaoqian shared memories from the past. To get back to being four equal sisters and rekindle her old connection with Xiaoqian, Yiye is giving it her all again today!
