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

Hong-bin smells Kim Tae-hee in Se-dong. Se-dong needs a hefty investment for a friend's hospital costs.

Hong-bin finally meets Joo Chang and gets shocked about Tae-hee's alleged death. Se-dong gets mad at Hong-bin.

Hong-bin reaches a point of crisis after blades come out of his body. Luckily, Secretary Go Ja-gyung helps him out.

Se-dong learns about Hong-bin and Tae-hee's past. She puts herself at risk by taking a photo of Tae-hee.

Hong-bin finds out about his father instigating thugs to beat Tae-hee in an attempt to take Chang away.

Hong-bin holds Tae-hee's funeral. Conflict arises between Hong-bin and Joo Jang-won. Tears are shed.

As Hong-bin and Se-dong begin their relationship. However, his past suddenly shows up slowly.

Hong-bin saves Joo Hong-joo. Se-dong waits for word from him. Hong-joo causes a disturbance in the family.

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

Hong-bin begins to open his heart towards Chang. However, Hong-bin increasingly gets tracked by detectives.

Se-dong learns that father of Hong-bin was the CEO of the company. Hong-bin is unaware of the situation.

Hong-bin hears from Hong-joo that Tae-hee is still alive. He now hurriedly runs to her immediately.

Hong-bin is reunited with Tae-hee and confirms his love for Se-dong. Se-dong fears that he'd leave her.

Hong-bin saves Tae-hee from kidnappers. He takes her to a hospital, where he meets Se-dong.

Hong-bin and Se-dong make the decision to break up. Tae-hee feels sorry for the two and hides from them.

Hong-bin has his broken heart hidden from daylight. He nurses Tae-hee with the best care he can provide.