Joo Hongbin has anger management issues and relies on his faithful secretary to keep him in line. Son Sedong is a game developer who finds that her company has been sold to Hongbin without her knowledge.

Hongbin smells Kim Taehee in Sedong. Sedong needs a hefty investment for a friend's hospital costs.

Hongbin finally meets Joo Chang and gets shocked about Taehee's alleged death. Sedong gets mad at Hongbin.

Hongbin reaches a point of crisis after blades come out of his body. Luckily, Secretary Go Jagyeong helps him out.

Sedong learns about Hongbin and Taehee's past. She puts herself at risk by taking a photo of Taehee.

Hongbin finds out about his father instigating thugs to beat Taehee in an attempt to take Chang away.

Hongbin holds Taehee's funeral. Conflict arises between Hongbin and Joo Jangwon. Tears are shed.

As Hongbin and Sedong begin their relationship. However, his past suddenly shows up slowly.

A crisis threatens to separate Hongbin, and this brings back a painful trauma from the past.

Hongbin begins to open his heart towards Chang. However, Hongbin increasingly gets tracked by detectives.

Sedong learns that father of Hongbin was the CEO of the company. Hongbin is unaware of the situation.

Hongbin is angered once again by Jangwon's ambitions. Madame Yoon Sawol plans her revenge over him.

Hongbin hears from Hongjoo that Taehee is still alive. He now hurriedly runs to her immediately.

Hongbin is reunited with Taehee and confirms his love for Sedong. Sedong fears that he'd leave her.

Hongbin saves Taehee from kidnappers. He takes her to a hospital, where he meets Sedong.

Hongbin and Sedong make the decision to break up. Taehee feels sorry for the two and hides from them.

Hongbin has his broken heart hidden from daylight. He nurses Taehee with the best care he can provide.