A drama about the careers and love lives of urban professionals. It will tell the story of four men in their forties as they go through love, breakup, success and failure.

Kim Do Jin (Jang Dong Gun), an architect with a scathing tongue has a romantic relationship with strict high school teacher Seo Yi Soo (Kim Ha Neul), who moonlights as an umpire at amateur baseball games. Im Tae San (Kim Soo Ro) is dating a cold-hearted woman (Yoon Se Ah) but wonders if there is someone else out there for him. Choi Yoon (Kim Min Jong) tries to heal his heart after losing his wife four years ago. Lee Jung Rok (Lee Jong Hyuk) marries an older woman (Kim Jung Nan) for money but may lose his comfortable lifestyle in a divorce.