On the day 18-year-old Shen Ning received her university admission letter, her parents' divorce left her abandoned, and her younger siblings disappeared without a trace. The trauma of her family background made her shut herself off. After graduating from university, she joined Times Fengjun and became the manager of Teens in Times. At first, Ma Jiaqi, Ding Chengxin, and the other five members thought she was a stern, no-nonsense workaholic. But as they spent time together, they discovered the tenderness hidden beneath her strict exterior.
Ding Chengxin gradually developed feelings for Shen Ning, who was three years older than him. But because of the shadows of her childhood, Shen Ning was afraid to accept his feelings. Meanwhile, secrets lurking beneath the surface of everyday life began to emerge: Shen Ning was actually a core member of a top assassin organization. Zhu Zhixin, Su Xinhao, and other boys from TF Family's third generation were her capable subordinates, silently guarding her. One of the boys also fell in love with her as they spent time together. Teens in Times, meanwhile, were guardians entrusted with the mission of upholding justice. Though their identities seemed to put them at odds, their daily companionship forged a special bond between them.
As they fought side by side, the boys also fell in love with her. In time, she changed them until they were just like the younger boys of the third generation.
In the end, the boys who loved her came to understand, amid her shattered light, that love meant letting her go. Zhang Ji and Zuo Hang also gradually changed their personalities.
