Sang Zhi is Sang Yan's younger sister and Duan Jia Xu is Sang Yan's friend.

Sang Zhi crushed over Duan Jia Xu but as time goes, she falls in love with him. Duan Jia Xu at first took her as a little sister but he also started to like her as a man loves a woman.

This story also shows the past of Duan Jia Xu and how that affects him.

This drama shows ~
the romance of Duan Jia Xu and Sang zhi
The great trio of Duan Jia Xu, Sang Zhi and Sang Yan
Cruel world to Duan Jia Xu
School and University life
Office life