Fei moves abroad to study. Years later, Fei comes back to Seoul an accomplished civil engineer and takes a position at JC & Associates. Unknown to her Doojoon (her first love) also works there. 

Main Characters:

Fei- A confident, independent woman that was hurt in the past by Doojoon.

Doojoon- Used to be cheerful and playful in the past but after Fei left, he had a change of character. 

Kris- A young, talented architect at JC & Associates. Takes an interest in Fei as soon as they meet.

Minor Characters:

Yuri- Fei's and Doojoon's secretary. Has a secret crush on Doojoon.

Victoria- Fei's and Doojoon's classmate, and Fei's friend.

Dongwoon- Fei's and Doojoon's classmate, and Doojoon's friend.