Park Sun Hee

Seo Jae-won who suffered an unfortunate childhood, becomes an ambitious and driven CEO that chases after success. But when her obsession gets out of hand, she tries to escape from her unhealthy desires but her husband, a designer and college professor, gets swept up in the process.

Miss Kim (Kim Da-Som) is a mysterious contract worker at a company. She keeps a low profile at work, but she is smart and has an excellent memory. Mr. Lee (Kwon Hyuk-Soo) is an enthusiastic rookie employee at the company. He always seems to be near Miss Kim.